Getting 'illegal parenthesized reference DWFUpdateJobProperty' error

I am developing a Workflow application using the Workflow APIs. Some of these APIs work correctly and some don't. For example, the DWFUpdateJobProperty displays this error when I use it in my code and try to save the code: "Illegal parenthesized reference DWFUpdateJobProperty."
This message indicates that LotusScript doesn't recognize the name DWFUpdateJobProperty as the name of a function. I believe that you are missing the Use statement for the script library containing the DWF functions. The Options section of your LotusScript code should contain the following statement:

Use "OS Domino Workflow API"
Please pay attention to scope issues when choosing which Options section to put this into. In particular, on a form or subform, to call DWF functions from an field event, action button or other control, put the Use statement in the Global Options, not the Form or Subform Options.