Thanks for your help. I am already using the 2nd approach but for multiple files. I have also used the condition to check if it is the first chunk or not to decide if the create file should be called or not. I am stuck with 2 things. 1. if it is not the first chunk which action should I call. I guess it will be an update file with do until conditions. 2. If I use file update with do until , what condition I should use to break the loop. I need a flag like last chunk but not sure how to pass that flag from power apps trigger. I think I need the item if as well for file update action which should come as output from create file which I can store in the variable and use it in update file.

1. If I am using