I have contact lookup in task. If I choose contact then it should show only related contacts to Account. I put the filter condition as follows
Activity: Related To ID equals Contact: Account ID
The above condition works fine if I create task from Account related list as Related To ID matches the Account Id whereas if I try to create task from Opportunity related list its not showing any contact as Related To ID in this case is Opportunity Id not Account Id.
HowI need to overcome thisget Contact of parent Account as well for that I use the below condition
Activity: Related To ID equals Contact: Account:Parent Account ID
Is that possible to get the Contact of parent Account if so how to get that?