Incident and Incident Task SLAs priorities

[Federico Fiume]

Hi all, 
we are trying to relate Incident and Incident Tasks for SLAs, we have connected the ITASK SLA to the incident.priority so when the incident's priority changes a new SLA of ITASK should be created but the problem is that happens only when the ITASK is refreshed or opened, if it is already open on a tab I don't see any changes.

Maybe there's something wrong in our business rule, I know that "display" is not the best, but I can't get it working with "before".
Table: itask
When: DISPLAY (and Query is checked)
Advanced script:

(function executeRule(current, previous /*null when async*/) {
    current.work_notes = "test change Priority";
    current.update();
})(current, previous);

What happens now:
1. I have a P4 INC (SLA is set on INC)
2. I create an ITASK (ITASK SLA is triggered based on incident.priority)
3. I change the INC to a P2 (original SLA on INC is canceled, new P2 SLA is created)
4. In the ITASK now I show P2 INC priority (but the ITASK SLA does not get updated, it changes only when I refresh the ITASK)

What do you suggest?
Please let me know if you need further informations.

Thanks a lot,
Federico

[Dubz]

Looks like the parent field on incident task isn't populated OOB, change to incident as below (always check field names etc when you get scripts off here :)):

var gr = new GlideRecord('incident_task');
gr.addQuery('incident', current.sys_id);
gr.query();

while(gr.next()){
gr.priority = current.priority;
gr.work_notes = "Priority has been changed";
gr.update();
}