Display pdf from google drive

[Benoit_Gramond]

Hi,
I have a workflow that save a pdf file.
I use the default value given by appsheet for theis file so in google drive it is ‘appsheet/data/Myappfile/Files’
I need to display this file, so I created a virtual file column in the app. When I let the location colum to default it does not work, when I change the location to ‘appsheet/data/Myappfile/Files’ it does not work either.
What should I put in the location formula ?

Thanks a lot