Feat with multiple choices?

[Mathias]

Correct, just like skill focus - you can't add a bonus to something that's not there.

[TCArknight]

This is a related question: Is there a way to do a set of string values as a Custom Expression for a feat?

I'd like to do:
"Heavy Wheeled Vehicles"
"Tracked Vehicle"
"Powerboat"
"Sailboat"
"Ship"

As a set of choices for a Feat, but I'm not figuring out how to get the tag right. I'm getting all things.

[Lawful_g]

Make 5 specials with those names that do not show on the specials or charge tab and give them a User.PickXXX tag. Bootstrap them to the feat and have the custom expression choose between things on the hero with the User.PickXXX tag. That should limit it to those appropriately named specials. I had to do this with feats that choose between elements (like Energy Substitution), or different special abilities (as in Aberration Blood), also true dragon types (like Draconic Heritage) and which level taken (Vow of Poverty and Nymph's Kiss). It is a very useful trick.

If the choice actually matters, have an eval script on the feat that assigns a User.Active tag to the selected special, and then have eval scripts on that special that carry out whatever you want them to do but only if the User.Active tag is present.

[TCArknight]

Thanks! That worked great!

How can I add a user tag to indicate the special is already taken? The feat can be taken more than once, but each choice is a unique feat.