Sum Nullable Fields

Sometimes you need to sum up fields that don't always have values. If you want the blank value to be treated as zero, this can be done using the following pattern:

SETRESULT(($number_1 || 0) + ($number_2 || 0) + ($number_3 || 0));

// OR
// SETRESULT(SUM($number_1 || 0, $number_2 || 0, $number_3 || 0));