Modify Request Page to automatically select Job Number of the open Job

We are using NAV 2013 and I have been able to develop a new report and create a new Icon on the "Job Task Line" ribbon to launch the report. When I click on this icon on the "Job Task Line" ribbon, the "Request Page" will launch but it does not automatically insert the current Job Number of the Job that is actually open at the time.

Is there a simple way to achieve this please?