I am doing some constraint coding. I am checking product Configurator knowns and comparing them.

In this case, if the ordered metrage of the product is taken from raw material that is longer than the ordered, then I want to call up a message box to the user to make sure they understand what they are doing .

if orderedlength > rawmaterial length then display.msg "You have selected rawmaterial > ordered length. Please verify"

I don't know the syntax but this is my thought process anyways :) ...

Can you code in to display a message box on the screen to warn them of a condition from the Prod Config Code ?

I am not sure what syntax at this point.