Urgency high (#899)

* Create script.js in urgency-high

* Create readme.md in urgency-high

Author: riya-misra-1

Client Scripts/Set Urgency to High onChange of caller field/readme.md

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+This is a client script that change urgency to high automatically when changing caller field with the caller name whose vip is true

Client Scripts/Set Urgency to High onChange of caller field/script.js

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+function onChange(control, oldValue, newValue, isLoading, isTemplate) {
+   if (isLoading || newValue === '') {
+      return;
+   }
+
+   var vipalert = g_form.getReference('caller_id',vipFunction);
+   function vipFunction(vipAlert){
+	 if(vipAlert.vip == 'true'){
+       g_form.setValue('urgency','1');
+	  }
+  }
+   
+}