On load event for new facet to show data

Hello,

What I need to do is, Add a new Embedded Component inside Activity(Task) which will display Main Account's main address in a formatted text manner.

I have tried to add EC and done Inport mapping for TaskID and same is now visible on screen but when I try to get PartyID from association which is 0...1 association, it doesn't work. Field is blank for PartyID.

My requirement is only to display and nothing else. I can't add AET field and write code in script file (AfterModify/BeforeSave) by extending Activity object because then there is no PBO event. My solution should work for existing Tasks as well.

Is there any way by which I can get the field value pre-populated?

Regards,

Omkar Uthale