Open Docs from Grid

Hi, I have a problem opening the documents from grid.
I use an api for S3 (cloud), so the field is of type Document (File Name). Instead, in the grid, it is of type Document (Database).
The problem is that I can not open the documents directly from grid, I have to enter the form and then i can. (I have two fields, documentfile documentofile_name which is the file name)
I appreciate an answer!
Thanks a lot!!