#  Update observable object

**URL:** <https://forums.fusetools.com/t/update-observable-object/4331>\
**Category:** How-to Discussions\
**Created:** [October 25, 2016, 4:08pm UTC](https://forums.fusetools.com/t/update-observable-object/4331 "2016-10-25T16:08:17Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![keiby](https://avatars.discourse-cdn.com/v4/letter/k/cc9497/32.png) [@keiby](https://forums.fusetools.com/u/keiby)\
**Post date:** [October 25, 2016, 4:08pm UTC](https://forums.fusetools.com/t/update-observable-object/4331/1 "2016-10-25T16:08:17Z")

</div>

Hello Fusers!

Help us to make a function which toggle “check” in some IDs from array “checkedIds” inside object “allMyItems”.

Thank you!

```auto
<JavaScript>
	var allMyItems = Observable()
	var checkedIds = [3, 4, 6, 8]

	var myItemsA = Observable(
		{id: 1, title: "A1", img: "http://url", check: false},
		{id: 2, title: "A2", img: "http://url", check: false},
		{id: 3, title: "A3", img: "http://url", check: false},
		{id: 4, title: "A4", img: "http://url", check: false}
	)
	var myItemsB = Observable(
		{id: 5, title: "B1", img: "http://url", check: false},
		{id: 6, title: "B2", img: "http://url", check: false},
		{id: 7, title: "B3", img: "http://url", check: false},
		{id: 8, title: "B4", img: "http://url", check: false}
	)

	var listElementAdd = function() {
		// whats here?
	}
	
		allMyItems.replaceAll([{
			items_a: myItemsA,
			items_b: myItemsB
		}])

		module.exports = {
			updateItems: updateItems,
			allMyItems: allMyItems
		}
</JavaScript>

<Activated>
	<Callback Handler="{updateItems}" />
</Activated>

<With Data="{allMyItems}">
	<StackPanel>
		<Each Items="{items_a}">item</Each>
		<Each Items="{items_b}">item</Each>
	</StackPanel>
</With>

```