diff --git a/src/app/app.ts b/src/app/app.ts
index 35d740fc..29871aeb 100644
--- a/src/app/app.ts
+++ b/src/app/app.ts
@@ -7,6 +7,7 @@ import { TreeView } from '../view/TreeView'
 import { SourceView } from '../view/SourceView'
 import { ListNode } from '../nodes/ListNode'
 import { BooleanNode } from '../nodes/BooleanNode'
+import { MapNode } from '../nodes/MapNode'
 
 const EntityCollection = ['sheep', 'pig']
 
@@ -17,7 +18,14 @@ const predicateTree = new RootNode('predicate', {
   predicate: new ObjectNode({
     type: new EnumNode(EntityCollection),
     nbt: new StringNode(),
-    test: new BooleanNode()
+    test: new BooleanNode(),
+    recipes: new MapNode(
+      new StringNode(),
+      new ObjectNode({
+        duration: new StringNode(),
+        flag: new BooleanNode()
+      })
+    )
   }),
   effects: new ListNode(
     new ObjectNode({
diff --git a/src/model/DataModel.ts b/src/model/DataModel.ts
index 83a15462..7373db96 100644
--- a/src/model/DataModel.ts
+++ b/src/model/DataModel.ts
@@ -24,18 +24,14 @@ export class DataModel {
     this.listeners.forEach(listener => listener.invalidated(this))
   }
 
-  get(path: Path) {
+  set(path: Path, value: any) {
     let node = this.data;
-    for (let index of path) {
-      if (node === undefined) node = {}
+    for (let index of path.pop()) {
+      if (node[index] === undefined) {
+        node[index] = {}
+      }
       node = node[index]
     }
-    return node
-  }
-
-  set(path: Path, value: any) {
-    let node = this.get(path.pop())
-    if (node === undefined) node = {}
 
     console.log('Set', path.toString(), JSON.stringify(value))
 
diff --git a/src/nodes/AbstractNode.ts b/src/nodes/AbstractNode.ts
index 1e4771e9..f00fce17 100644
--- a/src/nodes/AbstractNode.ts
+++ b/src/nodes/AbstractNode.ts
@@ -7,42 +7,41 @@ export interface INode<T> {
   default: () => T | null
   transform: (value: T) => any
   render: (path: Path, value: T, view: TreeView, options?: RenderOptions) => string
+  renderRaw: (path: Path, value: T, view: TreeView, options?: RenderOptions) => string
+}
+
+export interface StateNode<T> extends INode<T> {
+  getState: (el: Element) => T
 }
 
 export type RenderOptions = {
   hideLabel?: boolean
+  syncModel?: boolean
 }
 
 export type NodeChildren = {
   [name: string]: INode<any>
 }
 
-export type NodeMods<T> = {
+export interface NodeMods<T> {
   default?: () => T
   transform?: (value: T) => any
 }
 
 export abstract class AbstractNode<T> implements INode<T> {
   parent?: INode<any>
-  default: () => T | null = () => null
-  transformMod = (v: T) => v
+  defaultMod: () => T | null
+  transformMod: (v: T) => T
 
-  constructor(mods?: NodeMods<T>) {
-    if (mods?.default) this.default = mods.default
-    if (mods?.transform) this.transformMod = mods.transform
+  constructor(mods?: NodeMods<T>, def?: () => T | null) {
+    this.defaultMod = mods?.default ? mods.default : def ? def : () => null
+    this.transformMod = mods?.transform ? mods.transform : (v: T) => v
   }
 
   setParent(parent: INode<any>) {
     this.parent = parent
   }
 
-  wrap(path: Path, view: TreeView, renderResult: string): string {
-    const id = view.register(el => {
-      this.mounted(el, path, view)
-    })
-    return `<div data-id="${id}">${renderResult}</div>`
-  }
-
   mounted(el: Element, path: Path, view: TreeView) {
     el.addEventListener('change', evt => {
       this.updateModel(el, path, view.model)
@@ -52,9 +51,20 @@ export abstract class AbstractNode<T> implements INode<T> {
 
   updateModel(el: Element, path: Path, model: DataModel) {}
 
+  default(): T | null {
+    return this.defaultMod()
+  }
+
   transform(value: T) {
     return this.transformMod(value)
   }
 
-  abstract render(path: Path, value: T, view: TreeView, options?: any): string  
+  render(path: Path, value: T, view: TreeView, options?: RenderOptions): string {
+    const id = view.register(el => {
+      this.mounted(el, path, view)
+    })
+    return `<div data-id="${id}">${this.renderRaw(path, value, view, options)}</div>`
+  }
+
+  abstract renderRaw(path: Path, value: T, view: TreeView, options?: RenderOptions): string
 }
diff --git a/src/nodes/BooleanNode.ts b/src/nodes/BooleanNode.ts
index 1bfc2d42..c966f437 100644
--- a/src/nodes/BooleanNode.ts
+++ b/src/nodes/BooleanNode.ts
@@ -2,21 +2,27 @@ import { AbstractNode, NodeMods, RenderOptions } from "./AbstractNode";
 import { Path } from "../model/Path";
 import { TreeView } from "../view/TreeView";
 
+export interface BooleanNodeMods extends NodeMods<boolean> {
+  force: boolean
+}
+
 export class BooleanNode extends AbstractNode<boolean> {
-  constructor(mods?: NodeMods<boolean>) {
-    super(mods)
+  force: boolean
+
+  constructor(mods?: BooleanNodeMods) {
+    super(mods, () => false)
+    this.force = (mods?.force === true)
   }
 
-  render(path: Path, value: boolean, view: TreeView, options?: RenderOptions) {
+  renderRaw(path: Path, value: boolean, view: TreeView, options?: RenderOptions) {
     const falseButton = view.registerClick(el => {
-      view.model.set(path, value === false ? undefined : false)
+      view.model.set(path, !this.force && value === false ? undefined : false)
     })
     const trueButton = view.registerClick(el => {
-      view.model.set(path, value === true ? undefined : true)
+      view.model.set(path, !this.force && value === true ? undefined : true)
     })
-    return this.wrap(path, view, `
-      ${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
+    return `${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
       <button${value === false ? ' style="font-weight: bold"' : ' '} data-id="${falseButton}">False</button>
-      <button${value === true ? ' style="font-weight: bold"' : ' '} data-id="${trueButton}">True</button>`)
+      <button${value === true ? ' style="font-weight: bold"' : ' '} data-id="${trueButton}">True</button>`
   }
 }
diff --git a/src/nodes/EnumNode.ts b/src/nodes/EnumNode.ts
index 23178232..47740fe6 100644
--- a/src/nodes/EnumNode.ts
+++ b/src/nodes/EnumNode.ts
@@ -1,26 +1,29 @@
-import { AbstractNode, NodeMods, RenderOptions } from './AbstractNode'
+import { AbstractNode, NodeMods, RenderOptions, StateNode } from './AbstractNode'
 import { DataModel } from '../model/DataModel'
 import { TreeView } from '../view/TreeView'
 import { Path } from '../model/Path'
 
-export class EnumNode extends AbstractNode<string> {
+export class EnumNode extends AbstractNode<string> implements StateNode<string> {
   protected options: string[]
 
   constructor(options: string[], mods?: NodeMods<string>) {
-    super(mods)
+    super(mods, () => '')
     this.options = options
   }
 
-  updateModel(el: Element, path: Path, model: DataModel) {
-    model.set(path, el.querySelector('select')?.value)
+  getState(el: Element) {
+    return el.querySelector('select')!.value
   }
 
-  render(path: Path, value: string, view: TreeView, options?: RenderOptions) {
+  updateModel(el: Element, path: Path, model: DataModel) {
+    model.set(path, this.getState(el))
+  }
+
+  renderRaw(path: Path, value: string, view: TreeView, options?: RenderOptions) {
     const id = view.register(el => (el as HTMLInputElement).value = value)
-    return this.wrap(path, view, `
-    ${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
+    return `${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
     <select data-id=${id}>
       ${this.options.map(o => `<option value="${o}">${o}</option>`).join('')}
-    </select>`)
+    </select>`
   }
 }
diff --git a/src/nodes/ListNode.ts b/src/nodes/ListNode.ts
index 0cacbf62..b3551396 100644
--- a/src/nodes/ListNode.ts
+++ b/src/nodes/ListNode.ts
@@ -4,13 +4,11 @@ import { TreeView } from '../view/TreeView'
 import { Path } from '../model/Path'
 import { IObject } from './ObjectNode'
 
-
-
 export class ListNode extends AbstractNode<IObject[]> {
   protected children: INode<any>
 
   constructor(values: INode<any>, mods?: NodeMods<IObject[]>) {
-    super(mods)
+    super(mods, () => [])
     this.children = values
   }
 
@@ -18,18 +16,18 @@ export class ListNode extends AbstractNode<IObject[]> {
     model.set(path, el.querySelector('select')?.value)
   }
 
-  render(path: Path, value: IObject[], view: TreeView) {
+  renderRaw(path: Path, value: IObject[], view: TreeView) {
     value = value || []
     const button = view.registerClick(el => {
       view.model.set(path, [...value, this.children.default()])
     })
-    return this.wrap(path, view, `<label>${path.last()}:</label>
+    return `<label>${path.last()}:</label>
     <button data-id="${button}">Add</button>
     <div style="padding-left:8px">
       ${value.map((obj, index) => {
         return this.renderEntry(path.push(index), obj, view)
       }).join('')}
-    </div>`)
+    </div>`
   }
 
   private renderEntry(path: Path, value: IObject, view: TreeView) {
diff --git a/src/nodes/MapNode.ts b/src/nodes/MapNode.ts
new file mode 100644
index 00000000..62f6989b
--- /dev/null
+++ b/src/nodes/MapNode.ts
@@ -0,0 +1,45 @@
+import { AbstractNode, NodeMods, INode, StateNode } from './AbstractNode'
+import { DataModel } from '../model/DataModel'
+import { TreeView } from '../view/TreeView'
+import { Path } from '../model/Path'
+import { IObject } from './ObjectNode'
+
+export type IMap = {
+  [name: string]: IObject
+}
+
+export class MapNode extends AbstractNode<IMap> {
+  protected keys: StateNode<string>
+  protected values: INode<any>
+
+  constructor(keys: StateNode<string>, values: INode<any>, mods?: NodeMods<IMap>) {
+    super(mods, () => ({}))
+    this.keys = keys
+    this.values = values
+  }
+
+  renderRaw(path: Path, value: IMap, view: TreeView) {
+    value = value || []
+    const button = view.registerClick(el => {
+      const key = this.keys.getState(el.parentElement!)
+      view.model.set(path.push(key), this.values.default())
+    })
+    return `<label>${path.last()}:</label>
+    ${this.keys.renderRaw(path, '', view, {hideLabel: true, syncModel: false})}
+    <button data-id="${button}">Add</button>
+    <div style="padding-left:8px">
+      ${Object.keys(value).map(key => {
+        return this.renderEntry(path.push(key), value[key], view)
+      }).join('')}
+    </div>`
+  }
+
+  private renderEntry(path: Path, value: IObject, view: TreeView) {
+    const button = view.registerClick(el => {
+      view.model.set(path, undefined)
+    })
+    return `<div><button data-id="${button}">Remove</button>
+      ${this.values.render(path, value, view)}
+    </div>`
+  }
+}
diff --git a/src/nodes/ObjectNode.ts b/src/nodes/ObjectNode.ts
index d6847a4f..0a61ee1a 100644
--- a/src/nodes/ObjectNode.ts
+++ b/src/nodes/ObjectNode.ts
@@ -2,7 +2,7 @@ import { AbstractNode, NodeChildren, NodeMods, RenderOptions } from './AbstractN
 import { TreeView } from '../view/TreeView'
 import { Path } from '../model/Path'
 
-export interface IObject {
+export type IObject = {
   [name: string]: any
 }
 
@@ -10,7 +10,7 @@ export class ObjectNode extends AbstractNode<IObject> {
   protected fields: NodeChildren
 
   constructor(fields: NodeChildren, mods?: NodeMods<IObject>) {
-    super(mods)
+    super(mods, () => ({}))
     this.fields = fields
     Object.values(fields).forEach(child => {
       child.setParent(this)
@@ -27,15 +27,13 @@ export class ObjectNode extends AbstractNode<IObject> {
     return res;
   }
 
-  render(path: Path, value: IObject, view: TreeView, options?: RenderOptions) {
+  renderRaw(path: Path, value: IObject, view: TreeView, options?: RenderOptions) {
     if (value === undefined) return ``
-    return this.wrap(path, view, `
-    ${options?.hideLabel ? `` : `<label>${path.last()}:</label>
-    <div style="padding-left:8px">
-    `}
+    return `${options?.hideLabel ? `` : `<label>${path.last()}:</label>
+    <div style="padding-left:8px">`}
       ${Object.keys(this.fields).map(f => {
         return this.fields[f].render(path.push(f), value[f], view)
       }).join('')}
-    ${options?.hideLabel ? `` : `</div>`}`)
+    ${options?.hideLabel ? `` : `</div>`}`
   }
 }
diff --git a/src/nodes/StringNode.ts b/src/nodes/StringNode.ts
index 6c26a904..b364f0e6 100644
--- a/src/nodes/StringNode.ts
+++ b/src/nodes/StringNode.ts
@@ -1,20 +1,23 @@
-import { AbstractNode, NodeMods, RenderOptions } from './AbstractNode'
+import { AbstractNode, NodeMods, RenderOptions, StateNode } from './AbstractNode'
 import { Path } from '../model/Path'
 import { DataModel } from '../model/DataModel'
 import { TreeView } from '../view/TreeView'
 
-export class StringNode extends AbstractNode<string> {
+export class StringNode extends AbstractNode<string> implements StateNode<string> {
   constructor(mods?: NodeMods<string>) {
-    super(mods)
+    super(mods, () => '')
+  }
+
+  getState(el: Element) {
+    return el.querySelector('input')!.value
   }
 
   updateModel(el: Element, path: Path, model: DataModel) {
-    model.set(path, el.querySelector('input')?.value)
+    model.set(path, this.getState(el))
   }
 
-  render(path: Path, value: string, view: TreeView, options?: RenderOptions) {
-    return this.wrap(path, view, `
-      ${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
-      <input value="${value || ''}"></input>`)
+  renderRaw(path: Path, value: string, view: TreeView, options?: RenderOptions) {
+    return `${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
+      <input value="${value || ''}"></input>`
   }
-}
+} 
diff --git a/src/view/TreeView.ts b/src/view/TreeView.ts
index 7d9b5829..b2618b5b 100644
--- a/src/view/TreeView.ts
+++ b/src/view/TreeView.ts
@@ -33,7 +33,10 @@ export class TreeView implements ModelListener {
 
   registerClick(callback: (el: Element) => void): string {
     return this.register(el => {
-      el.addEventListener('click', _ => callback(el))
+      el.addEventListener('click', evt => {
+        callback(el)
+        evt.stopPropagation()
+      })
     })
   }