Collection created in a component is unavailable outside of the component

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Posted on by OliverR-82

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Hi wonderful community.

I have built a component that contains the following (among other things):

A gallery
- In the gallery I have a checkbox. When you check the box for an item in the gallery, the item is added to a collection using Collect(colSelectedItems,ThisItem.Value).
A label that shows all the items for which the checkbox was checked, using Concat(colSelectedItems,Value,", ").

That works as it should, across multiple apps.

The problem is that when I use the component in an app, I cannot reference the collection colSelectedItems that is created by the component. It doesn't exist / is unknown within the app, even though the label in the component correctly displays all the selected items. I've tried creating a custom table output property, but I can't set that to colSelectedItems, either.

Please please tell me that it's possible to reference the collection outside of the component 🙂 I think I'll have a small breakdown if it turns out that it's just not possible for some reason.

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Building Power Apps

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v-chengfen-msft Microsoft Employee on at

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Hi @OliverR-82 ,
Please turn on the Component's 'Access app scope' function and try again.

Here is a link for your reference:
Canvas components can now access app scope directly | Microsoft Power Apps

Best Regards
Cheng Feng

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OliverR-82 623 on at

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Hi @v-chengfen-msft

Thank you for your suggestion and the reference link. I did not know about that feature. However, in my particular case that is not an option, as the 'Access app scope' property for components is not available for components that are part of a component library, which is the case for me.

In the end I just added two custom output properties for my component that output the data from the collection that I need using the Concat() function. That results in a string output, which is what I need since I need to pass them to a Power Automate flow as text anyway.

If you need to output table data, I figured out that I can do that by adding an output property with data type 'Table', and set that to the following formula:
ForAll( colSelecteditems, {Id: Id, Value: Value} )

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