Question : IsDefined problem

Q_1.B = Trim(Form.1.B)>set Q_1.B = ''>

This keeps throwing an error: Element 1.B is undefined in FORM

I thought this whas the purpose of IsDefined.

Answer : IsDefined problem

>>Well, that would be used to equate a literal.  However, here's the error that your suggestion throws:
>>Parameter 1 of function IsDefined, which is now "Form.1.A", must be a syntactically valid variable name.


radley is correct.  It checks to see if the string passed as a parameter is defined as a variable.  if you pass a variable to the function, it will check to see if the value that variable holds is a defined variable.  You are getting that error because "form.1.b" is not a valid variable name.  You cannot have a variable whose name starts with a number (among other rules for naming variables."  ... thus, form.1.b gives member "b" which is a member of struct "1" (which is an invalid name) which is supposed to be a member of the form struct.

Again, no naming variables with the first character as a number!  This will fix your problem.