1 person found this helpful
You just put it in your personalization....You will need to grant execute privilege on the function/package for APPS.
If you are passing any parameters that can get tricky, but just use the Insert Item Value or Insert 'Get' Expression buttons to find the complete name of that field on the form. Use the Validate form to check your syntax.
So if you are calling it as a condition:
If you are calling it as an action
Target Object - the field you want calculated by your function
Property Name = property being changed by function (usually VALUE)
Value = Call to your function: (MUST have the '=')