Hi there, 

I can't seem to get something working and hope you have advice. I need to create a file each month and want the names to include a field called %FileDate so that they are date-stamped. I am trying to either:

• Create a CSV file using CSV writer, that has an expando field in the file name. EG, I'm trying to use "Invoices" & %FileName & ".csv"
• If that can't work, how about a dynamic folder in which I can put the file? I've tried using the CreateFolder function, which worked, and then when trying to define the file path, I used: 

  Dim Dir

  Dir = "\\GroupDocs\Sage2019\IMAN_File\" & %FileName

  CreateFolder(Dir)

Both of these attempts result in an error: 

"Illegal characters in path."

I'm confused by the illegal characters. The characters in %FileName are: 2020-04-23_Invoices

I've also tried to change the expando field from %FileName to ones that are strictly letters. Same result.

So is this possible? I was referencing this page, which shows exactly what I want to do:

https://www.realisable.co.uk/support/Documentation/iman-user-guide/IOControllers/File.htm