# Data list source update

**URL:** <https://community.thunkable.com/t/data-list-source-update/1116751>\
**Category:** Feedback\
**Tags:** beginner\
**Created:** [February 22, 2021, 7:12pm UTC](https://community.thunkable.com/t/data-list-source-update/1116751 "2021-02-22T19:12:51Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![erikhjertholm12](https://avatars.discourse-cdn.com/v4/letter/e/47e85d/32.png) [@erikhjertholm12](https://community.thunkable.com/u/erikhjertholm12)\
**Post date:** [February 22, 2021, 9:29pm UTC](https://community.thunkable.com/t/data-list-source-update/1116751/3 "2021-02-22T21:29:52Z")

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Sorry for the lack of information, here are som more info. I’m working on an app that can be described as a medication reminder. Long story short in this use case, the user will always be at a certain level, and this level can be changed. I wanted to make a scrollable list where the current selection is marked, and where the marking is “moved” when the user makes a selection. This is done with a data list viewer with a standard built in table as a source.

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/2/0/203a61b7d52dedb6c34958a7b3814d31ecab64bb.png)

The table looks like this, and goes all the way to 42:

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/3/a/3a95ec53b34ddcd4f9a1626685dd7451ae72a58d.png)

When an element in the list is clicked, I first set the previous levels colour to white, and then set the new selection to an orange colour.

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/4/a/4a410dc5aebf57e55cfaeab8f465b5ae02b372b5.png)

Now, I messed up in the beginning and edited the wrong column where I set the colour value in the numbers column so that it ended up looking like this in the preview:

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/7/e/7e478811916289b2702371360fddd182fa1c8a8d.png)

Now this should be a fairly straight thing to change right? Just go back to the table and edit the value manually? Nope, because these are the current values in that table:

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/6/1/6159c605fa00b446321f3faf39879d4531f79377.png)

Why isn’t it a 1-to-1 relation between what the list viewer is showing and the contents in the source of the list viewer? I’ve tried selecting another source, I’ve tried manipulating the values in the table. The only way I could change it was to delete the list viewer element, and create a new one (which I’ve already done once).

I still hope I’ve done something wrong here, but looking at the post below, it seems like they have the same issue, and the latest post is a month old in time of writing.

> [@\[Solved\] Data Viewer List Data Source not updating](https://community.thunkable.com/t/solved-data-viewer-list-data-source-not-updating/632384):
>
> Hi, I am using the Data Viewer List with a local Data Source created from the List properties. My problem is that when I create a row in the blocks, the introduced data doesn’t show unless I restart the app. Also this data does not show in the Data Sources table, it stays blank (although the data must be there if it shows when I restart the app!) Is this because the component is new and still buggy or there is a way to reload the data without restarting the app? Thanks

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