make flow send back message to powerapp

 

https://powerusers.microsoft.com/t5/Building-PowerApps-Formerly/Capture-Image-and-Save-as-Attachment...

 

I have made a test on my side, please consider take a try with the following flow's configuration:

 

Within your app, set the OnSuccess property of the Edit form to following:

Set(ReturnedMsg, 'YourFlowName'.Run("","").ReturnedMsg);   /* <-- Getting the returned output from above flow */
Nofify(ReturnedMsg, NotificationType.Success)      /* <-- Display a successfull Prompt info */
Back()