If the caller of incident is a VIP user then Urgency should be set to High automatically and there should be an alert to the user creating an incident.

[Mishu]

If the caller of incident is a VIP user then Urgency should be set to High automatically and there should be an alert to the user creating an incident. I wrote the below script for this but its not working . Please suggest 

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
if (isLoading || newValue === '') {
return;
}

var user = g_form.getValue('caller_id');
var urg = g_form.getValue('urgency');

If (user.VIP == 'true')

{

g_form.setvalue('urg', '1');

alert('urg is set to high');

}

//Type appropriate comment here, and begin script below

}

[Astik Thombare2]

Use GlideAjax-

Script Include:

var getVIP = Class.create();
getVIP.prototype = Object.extendsObject(AbstractAjaxProcessor, {
getCaller: function() {
var ga = new GlideRecord('incident');
ga.get('caller_id', this.getParameter('sysparm_caller'));
var callerIsVip = ga.caller_id.vip;
return callerIsVip;

},

type: 'getVIP'
});

On change client script on Caller field-

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
if (isLoading || newValue === '') {
g_form.setValue('urgency',3);
return;
}
var ga = new GlideAjax('getVIP');
ga.addParam('sysparm_name', 'getCaller');
ga.addParam('sysparm_caller', g_form.getValue('caller_id'));

ga.getXML(getCallerName);

function getCallerName(response) {
var answer = response.responseXML.documentElement.getAttribute("answer");
if (answer == 'true') {
alert('Caller Is Vip');
g_form.setValue('urgency', 1);
}
}

}

[Charan 1997]

Table : Incident
Type : On Change

Field : Caller

Script:

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

   if (isLoading || newValue === '') {

      return;

   }

var caller = g_form.getReference('caller_id');

if(caller.vip == 'true'){

    var urg = g_form.setValue('urgency','1');

    alert("urgency is set to 1");

}

}