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Collection "Mismatched types" and "AllItems is not recognized"

Posted on by s44 691

Hello, I created a Collection in "OnVisible" propriety of my screen : 

s44_0-1720779295455.png

 

And I want to display the collection in my gallery. But I have an error

s44_1-1720779491600.png

 

 

My errors : "Mismatched types" and "AllItems is not recognized"

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