Having Trouble Setting up Simple User-Defined Function

[stupomer]

Still having trouble setting this up

So Macro 1 says:

Code:

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str+ mrn exam[
GetDemographics mrn exam;; this is the function name
outp "The patient medical record number is %s and the exam code is%s" mrn exam

Macro 2 is the function "GetDemographics" as follows:

Code:

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function str&mrn str&exam
spe -1

;; some steps that fill the clipboard
mrn.getclip
;;some additional steps that fill the clipboard with different text
exam.getclip
end

QM is saying invalid pointer for mrn. I am not sure what this means or how to change this? Anything to do with the operator "*" ?

Thanks!,
Stuart