Pass Account Id on a EC and to Quick Create Screen

Hello Experts,

I have created a custom BO and I've associated this with Account. Now when ever I create a new instance of the BO I should get the Account Id prepopulated.

I've already added the custom EC to the Account screen and the EC is invoking correctly but I don't know how to pass the account id on this EC. If anyone of you have done this scenario please let me know this can be achieved.

Thanks in advance

Sandeep