PBCS Data export rule with substitution variable for filename including path

Summary

I am trying to use a substitution variable in a dataexport rule, but it does not validate

Content

Hi, I am trying to run a dataexport using a substitution variable.

I have tried my substitution variable with and without " delimiters, and after a Cameron Larkpour blog with opening delimiter with the closing delimiter in the rule. All fail to validate.

 

Can anyone advise if this is possible.

Variable called WorkFileX with current value   /u03/lcm/WorkforceExportZeroLevel17.txt

Script excerpt as 

 

 

dataexport "File" "|" &WorkFileX "0";

 

Current error reported; -

 

A validation error was received from the Planning server.
'Error:Syntax error in DataExport command. Please provide a valid filename Rule CCplan.Wrkforce.Workforce Export Zero Level Daily Backup'