Help with editing an event

I am trying to edit the event for the House_custimizer_event to add in a new house for that when picking the extint house option. I would like to add in the ability to choose house varzerys. Now I able to edit it so that I can become house Varzerys however I am playing with the more bloodlines submod and House Varzery's has a Bloodline, and I also want to set my ancestor as Aurion Varzery's however I am having difficulty doing that. any help would be very appreciated!