Workflow Rules message by Criteria

SOLVED

In the message text area in workflow rules, I was wondering if we can display text in a email dynamically based on a criteria. 

This is my attempt, but doesnt work:

|[F:PSD1]ITMDES<> '',chr$(13)+chr$(10)+"Order Description :[F:PSD1]ITMDES|

Basically what I am trying to say is if the record exists then write order description: product description to the body of the email. 

Thanks

Chris