ObjectHooks.onSetMissingField

Add this method to your class to handle assignment to fields that are not publicly defined.

Return Result.ok(true) if the assignment was successful. Otherwise, return Result.fail(), to trigger an error.

class Timer {

    fields {
        durationSecs: 0
    }

    fn zDynamicSet($fieldName, $value) {
        if $fieldName == 'durationMins' {
            // convert minutes to seconds
            @.state.durationSecs = $value * 60
            return Result.ok(true)
        }
        return Result.fail()
    }
}

$timer = Timer()

$timer.durationMins = 10