diff --git a/src/app/app.ts b/src/app/app.ts
index 9e37b8dc..0b10c355 100644
--- a/src/app/app.ts
+++ b/src/app/app.ts
@@ -5,6 +5,7 @@ import { StringNode } from '../nodes/StringNode'
 import { DataModel } from '../model/DataModel'
 import { TreeView } from '../view/TreeView'
 import { SourceView } from '../view/SourceView'
+import { ListNode } from '../nodes/ListNode'
 
 const EntityCollection = ['sheep', 'pig']
 
@@ -15,9 +16,24 @@ const predicateTree = new RootNode('predicate', {
   predicate: new ObjectNode({
     type: new EnumNode(EntityCollection),
     nbt: new StringNode()
-  })
+  }),
+  effects: new ListNode(
+    new ObjectNode({
+      type: new EnumNode(EntityCollection),
+      nbt: new StringNode()
+    }, {
+      default: () => ({
+        type: 'sheep'
+      })
+    })
+  )
 }, {
-  default: () => ({ condition: 'foo', predicate: { nbt: 'hi' } })
+  default: () => ({
+    condition: 'foo',
+    predicate: {
+      nbt: 'hi'
+    }
+  })
 });
 
 const model = new DataModel(predicateTree)
diff --git a/src/model/DataModel.ts b/src/model/DataModel.ts
index 0f9112f1..7373db96 100644
--- a/src/model/DataModel.ts
+++ b/src/model/DataModel.ts
@@ -12,7 +12,7 @@ export class DataModel {
 
   constructor(schema: RootNode) {
     this.schema = schema
-    this.data = schema.default
+    this.data = schema.default()
     this.listeners = []
   }
 
@@ -32,7 +32,18 @@ export class DataModel {
       }
       node = node[index]
     }
-    node[path.last()] = value
+
+    console.log('Set', path.toString(), JSON.stringify(value))
+
+    if (value === undefined) {
+      if (typeof path.last() === 'number') {
+        node.splice(path.last(), 1)
+      } else {
+        delete node[path.last()]
+      }
+    } else {
+      node[path.last()] = value
+    }
 
     this.invalidate()
   }
diff --git a/src/nodes/AbstractNode.ts b/src/nodes/AbstractNode.ts
index 17d8fc38..1e4771e9 100644
--- a/src/nodes/AbstractNode.ts
+++ b/src/nodes/AbstractNode.ts
@@ -4,8 +4,13 @@ import { TreeView } from "../view/TreeView"
 
 export interface INode<T> {
   setParent: (parent: INode<any>) => void
+  default: () => T | null
   transform: (value: T) => any
-  render: (path: Path, value: T, view: TreeView) => string
+  render: (path: Path, value: T, view: TreeView, options?: RenderOptions) => string
+}
+
+export type RenderOptions = {
+  hideLabel?: boolean
 }
 
 export type NodeChildren = {
@@ -19,11 +24,11 @@ export type NodeMods<T> = {
 
 export abstract class AbstractNode<T> implements INode<T> {
   parent?: INode<any>
-  default?: T
+  default: () => T | null = () => null
   transformMod = (v: T) => v
 
   constructor(mods?: NodeMods<T>) {
-    if (mods?.default) this.default = mods.default()
+    if (mods?.default) this.default = mods.default
     if (mods?.transform) this.transformMod = mods.transform
   }
 
@@ -39,7 +44,10 @@ export abstract class AbstractNode<T> implements INode<T> {
   }
 
   mounted(el: Element, path: Path, view: TreeView) {
-    el.addEventListener('change', evt => this.updateModel(el, path, view.model))
+    el.addEventListener('change', evt => {
+      this.updateModel(el, path, view.model)
+      evt.stopPropagation()
+    })
   }
 
   updateModel(el: Element, path: Path, model: DataModel) {}
@@ -48,5 +56,5 @@ export abstract class AbstractNode<T> implements INode<T> {
     return this.transformMod(value)
   }
 
-  abstract render(path: Path, value: T, view: TreeView): string  
+  abstract render(path: Path, value: T, view: TreeView, options?: any): string  
 }
diff --git a/src/nodes/EnumNode.ts b/src/nodes/EnumNode.ts
index d9b021c3..23178232 100644
--- a/src/nodes/EnumNode.ts
+++ b/src/nodes/EnumNode.ts
@@ -1,4 +1,4 @@
-import { AbstractNode, NodeMods } from './AbstractNode'
+import { AbstractNode, NodeMods, RenderOptions } from './AbstractNode'
 import { DataModel } from '../model/DataModel'
 import { TreeView } from '../view/TreeView'
 import { Path } from '../model/Path'
@@ -15,9 +15,10 @@ export class EnumNode extends AbstractNode<string> {
     model.set(path, el.querySelector('select')?.value)
   }
 
-  render(path: Path, value: string, view: TreeView) {
+  render(path: Path, value: string, view: TreeView, options?: RenderOptions) {
     const id = view.register(el => (el as HTMLInputElement).value = value)
-    return this.wrap(path, view, `<span>${path.last()}</span>
+    return this.wrap(path, view, `
+    ${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
     <select data-id=${id}>
       ${this.options.map(o => `<option value="${o}">${o}</option>`).join('')}
     </select>`)
diff --git a/src/nodes/ListNode.ts b/src/nodes/ListNode.ts
new file mode 100644
index 00000000..0cacbf62
--- /dev/null
+++ b/src/nodes/ListNode.ts
@@ -0,0 +1,43 @@
+import { AbstractNode, NodeMods, INode } from './AbstractNode'
+import { DataModel } from '../model/DataModel'
+import { TreeView } from '../view/TreeView'
+import { Path } from '../model/Path'
+import { IObject } from './ObjectNode'
+
+
+
+export class ListNode extends AbstractNode<IObject[]> {
+  protected children: INode<any>
+
+  constructor(values: INode<any>, mods?: NodeMods<IObject[]>) {
+    super(mods)
+    this.children = values
+  }
+
+  updateModel(el: Element, path: Path, model: DataModel) {
+    model.set(path, el.querySelector('select')?.value)
+  }
+
+  render(path: Path, value: IObject[], view: TreeView) {
+    value = value || []
+    const button = view.registerClick(el => {
+      view.model.set(path, [...value, this.children.default()])
+    })
+    return this.wrap(path, view, `<label>${path.last()}:</label>
+    <button data-id="${button}">Add</button>
+    <div style="padding-left:8px">
+      ${value.map((obj, index) => {
+        return this.renderEntry(path.push(index), obj, view)
+      }).join('')}
+    </div>`)
+  }
+
+  private renderEntry(path: Path, value: IObject, view: TreeView) {
+    const button = view.registerClick(el => {
+      view.model.set(path, undefined)
+    })
+    return `<div><button data-id="${button}">Remove</button>
+      ${this.children.render(path, value, view, {hideLabel: true})}
+    </div>`
+  }
+}
diff --git a/src/nodes/ObjectNode.ts b/src/nodes/ObjectNode.ts
index 66d441e9..d6847a4f 100644
--- a/src/nodes/ObjectNode.ts
+++ b/src/nodes/ObjectNode.ts
@@ -1,4 +1,4 @@
-import { AbstractNode, NodeChildren, NodeMods } from './AbstractNode'
+import { AbstractNode, NodeChildren, NodeMods, RenderOptions } from './AbstractNode'
 import { TreeView } from '../view/TreeView'
 import { Path } from '../model/Path'
 
@@ -27,12 +27,15 @@ export class ObjectNode extends AbstractNode<IObject> {
     return res;
   }
 
-  render(path: Path, value: IObject, view: TreeView) {
+  render(path: Path, value: IObject, view: TreeView, options?: RenderOptions) {
     if (value === undefined) return ``
-    return this.wrap(path, view, `<span>${path.last()}:</span><div style="padding-left:8px">
+    return this.wrap(path, view, `
+    ${options?.hideLabel ? `` : `<label>${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('')}
-    </div>`)
+    ${options?.hideLabel ? `` : `</div>`}`)
   }
 }
diff --git a/src/nodes/StringNode.ts b/src/nodes/StringNode.ts
index 0cd1aff8..6c26a904 100644
--- a/src/nodes/StringNode.ts
+++ b/src/nodes/StringNode.ts
@@ -1,4 +1,4 @@
-import { AbstractNode, NodeMods } from './AbstractNode'
+import { AbstractNode, NodeMods, RenderOptions } from './AbstractNode'
 import { Path } from '../model/Path'
 import { DataModel } from '../model/DataModel'
 import { TreeView } from '../view/TreeView'
@@ -12,8 +12,9 @@ export class StringNode extends AbstractNode<string> {
     model.set(path, el.querySelector('input')?.value)
   }
 
-  render(path: Path, value: string, view: TreeView) {
-    return this.wrap(path, view,
-      `<span>${path.last()}</span> <input value="${value || ''}"></input>`)
+  render(path: Path, value: string, view: TreeView, options?: RenderOptions) {
+    return this.wrap(path, view, `
+      ${options?.hideLabel ? `` : `<label>${path.last()}</label>`}
+      <input value="${value || ''}"></input>`)
   }
 }
diff --git a/src/view/TreeView.ts b/src/view/TreeView.ts
index f4434d5d..7d9b5829 100644
--- a/src/view/TreeView.ts
+++ b/src/view/TreeView.ts
@@ -31,6 +31,12 @@ export class TreeView implements ModelListener {
     return id
   }
 
+  registerClick(callback: (el: Element) => void): string {
+    return this.register(el => {
+      el.addEventListener('click', _ => callback(el))
+    })
+  }
+
   render() {
     this.target.innerHTML = this.model.schema.render(new Path(), this.model.data, this)
     for (const id in this.registry) {