Name change while file is uploading doesn't work

I want to change the name of the file while uploading the attachment, as explained in the URL - I changed attributes as below,

My problem is, once the file is uploaded I CANNOT see the file name is being changed as configured in the attributes ({{Name}} Evidence).

Am I missing something here?
NOTE: I’m using this on a wizard, The field used is selected in the model and has the full access rights.

Can someone give me an advice on this please?


The user and all related content has been deleted.

Hi Peter, Thanks for the reply, I haven’t selected the field under the model-> fields section.

Thanks again.