This is the correct answer
BR
WHEN: Before
Insert/ update
(function executeRule(current, previous /*null when async*/ ) {
if (current.caller_id.vip == true) {//get the value of the caller Id
gs.addInfoMessage('CALLER is VIP');// show infomessage which confirm that the caller is VIP
} else {
gs.addErrorMessage('Is not VIP');//show infomessage which confirm that the caller is not VIP
}
})(current, previous);
