I resolved it through my mentor. Here's the fix I got:if ( HasValue(VolEEAmount) ) then if ( Within(InvisibleEEAgeCalField.rawValue, 0, 29) ) then 0.000075 * VolEEAmount.rawValue else if ( Within(InvisibleEEAgeCalField.rawValue, 30, 35) ) then 0.000100 * VolEEAmount.rawValue else 0.000200 * ...