when Incident Priority is changing to 1 - Critical then show a confirm popup message to confirm priority change. "Priority will be changed to P1. Are you sure to proceed with this action?

[Arjun Reddy Yer]

"when Incident Priority is changing from 3 - Low  or 2 - Medium to 1 - Critical then show a confirm popup message to confirm priority change with OK or Cancel buttons. "Priority will be changed to P1. Are you sure to proceed with this action?" 

If user select OK, then only change the priority should change otherwise reset to old value.

If Priority changed to P1 then need to send email to caller.

 @Ankur Bawiskar @Mohith Devatte @Musab Rasheed @Aman Kumar  @Pradeep Sharma 

[Charles Louis1 · Accepted solution]

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
   if (isLoading || newValue === '') {
      return;
   }
    if(newValue=="1") 
{
var res= confirm('Priority will be changed to P1. Are you sure to proceed with this action?');
  if(res== true){
     return true;
    }
    else{
g_form.setValue('priority',oldValue);
        }
     }
}

[Charles Louis1]

Hi,

Please go through this link 

https://servicenowguru.com/scripting/client-scripts-scripting/javascript-popup-boxes-servicenow/#:~:...

Please Mark it correct if its helpful.

[Arjun Reddy Yer]

if the user selects cancel button then it should return to old value and should send a mail to the user.

var priority = g_form.getValue('priority');
   if (priority == 1)
      return confirm('Priority will be changed to P1. Are you sure to proceed with this action?');

as I had tried with the code but it's not returning to old value it's there on the form 

[Charles Louis1]

If u see the form is not saved just reload the screen it will have your old values 

Please Mark it correct if its helpful.

[Arjun Reddy Yer]

but if the user selects cancel button then it should return to old value with out reloading the screen and should send a mail to caller