Adding a folder location with backslashes to a string

I am trying to add this string to an existing column and cannot figure out how to get it to not error with the backslashes (this is a File Server location).

"\AWSWIGNVAW0001\OpsFileServer\DOT\EPIC 7-30-2024\attachments\files"

This expression is not working:

join("\AWSWIGNVAW0001\OpsFileServer\DOT\EPIC 7-30-2024\attachments\files",$FileName$)

Any suggestions?