Automatically update repair type through personalization

Hi Gurus,

We are trying to automatically update the repair order type when certain conditions are met ; for instance, if a repair is determined to be out of warranty, then the repair type should switch from "std repair" to "std no-warranty repair".

In order to do this, I thought about using a personalization that would take into consideration the Warranty Status field (that is a mandatory field for us) and if the value is Warranty Voided, then the

Update Repair Type menu function would automatically popup with the new repair order type set on the "new repair type" field.

So far so good, I created a personalization where the condition trigger event is WHEN-VALIDATE-RECORD and the object is REPAIRS and the condition is: :RO_WARRANTY_STATUS_MEANING = 'Warranty Voided'