Changing Priority of BPM Activity dynamically based upon Context values

Hi Experts,

I am using BPM 7.2.

In the BPM Process Design time, Priority of BPM task can be set from available values (Low / Med / High).

I have a requirement to change the priority of BPM task based upon the context values Like wise how we change the User text displayed in UWL based upon the Context values.

Thanks for your help in advance.

Regards,

Amol