Creating a Special Ability in Hero Labs
 

I am trying to create a special ability in Hero Labs that goes for the following power.

At 7th level, an eldritch magus gains Eldritch Heritage as a bonus feat, even if she does not meet the prerequisites. If she already has the Eldritch Heritage feat, she instead gains the Improved Eldritch Heritage feat (but must choose the 3rd level power).

This ability replaces the knowledge pool ability.

I can easily get it to add Eldritch Heritage, but I don't know how to code it to detect if the feat already exists, and select Improved Heritage feat instead. Anyone know?

maybe looking at something similar like the uncanny dodge and improved uncanny dodge might help?

We don't implement this sort of thing ourselves. There are just too many possibilities to handle. If this happens, the user can delete the other copy of Eldritch Heritage and manually add Improved Eldritch Heritage.