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Allow only PDF Attachment in the PowerApps form!

Hi All, 

I am trying to prevent users from attaching any file extensions except PDF but I cannot find the right clue to do it. 


Note: I am able to do it if the user uploading only one PDF but in case of multiple files the collection read only the first one using the below formula :


Would you please help to sort this out? 

I want to use " ForAll(Colattachment, If(!EndsWith(galAttachments.Selected.Name,"pdf"),DisplayMode.Edit,DisplayMode.Disabled)

but I am getting an error. 


Thanks for the help! 

Not applicable

Hi @Hassan-Elkhouli 

Did you ever get this to work?

I too have the same requirement of only allowing users to upload PDF file(s).

What property did you set this fx on, I've tried on DisplayMode but get errors:


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