This function checks the prompt field for whether the user entered a value for the prompt or not. This is simply determined by checking whether the prompt field has a value set for it AND whether it is more than just an empty string. Note that any parameter type is allowed, not just a prompt field - the function will simply check the parameter for whether it is not null and not an empty string.

HasValue( promptfield )

True, if promptfield is not null AND not an empty string.

HasValue ({?myprompt}) // Returns True if the prompt's value was set, False otherwise
HasValue ("")          // Returns False.
HasValue (null)        // Returns False
HasValue (1)           // Returns True.

• IsNull