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Check/Test Input Parameter

Question asked by jamesfreddyc on Oct 1, 2013
Latest reply on Oct 1, 2013 by jamesfreddyc
Easy question:  How do I test or check a Toolbox "Workspace" type parameter?

 outputGDB = GetParameter(0)  if outputGDB == ? 

I need to check to see if the user specified a Workspace or not (left the parameter blank/empty)