Script to change owner/user of Job Definition in CPS

Hi,

We are looking for the script which can change the user/owner of the job definition, by default when ever we create/import any job definition in CPS it adds the user in "Security Tab" along with Grant-All and Grantable-All permissions and it will be grayed out and no changes allowed to that object owner/user.

We have requirement to change the owner/user of the job definitions. Can any one provide the cps script logic to update user/owner.

Thanks

Nidhish