Thank you Achim and Tom, your suggestions solved the problem.
I had some weeks ago set up this same routine with two parameters ($1
was a pointer; $2 was text) and recently say a way of eliminating one
of the parameters (the pointer).
However, what I didn't realise was that the original parameters were
fixed in the Compiler-method and so it saw $1 as a pointer when I was
passing a text. Hence, Invalid constant type: Alphanumeric.
Thank you again for expanding my limited knowledge of 4D.
Michael.
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