FORM FORMULAS

A FORMULA is any expression that can be evaluated to return a value. We call them "FORM FORMULAS" because they are always evaluated in the context of a specific FORM and they are alway placed in properties of ant ITEM TEMPLATE OBJECT that accept FORMULAS as their value

FORMULAS can be used to:

  • Assign a calculated value to an ITEM in a FORM. In this case, the ITEM does not need input form a user, because it will be automatically calculated
  • Assign a default value to an ITEM: Sometimes it is necessary to assign a default value to an ITEM even though it is still necessary the input from a user
  • ITEM conditions: an ITEM can have an associated condition that determines whether that ITEM will be used in the FORM or not (see ITEM TEMPLATE OBJECT)