Race Editing
 

So I'm making some subraces and one of them gains the mobile feat at 3rd level.

So I've tried using this:

~ If we're disabled, do nothing
doneif (tagis[Helper.Disable] = 1)

if (#totallevelcount[] >= 3) then
perform hero.assign[ft5CMobile]
endif

but my perform hero.assign line is incorrect, any ideas what I'm doing wrong?

Assign only works on tags. You can't assign a new "thing" that way.

What you need to do is bootstrap the feat to the subrace and use a Conditional that has a rule like:

count:Classes.? >= 3

Check out the PHB-Races file and look at drow magic for darkness or faerie fire.

I tried that...I can't remember why it didn't work.
It'd copied the Nercrotic Shroud from Fallen Aasimar successfully for a previous ability but this feat was NOT having it.

Sometimes it is timing - I think bootstraps that add abilities and spells like that have to run pre-level but usually i set them to run First/250.

I get an error that says: Thing 'raRCHntrGr', with condition test currently at first/5000 bootstraps thing 'ft5CMobile' which must have it's live state resolved by First/100

I've set it to first/100 and it will compile and test but it won't actually add the race ability.

I would be doubtful that Classes.? tags get onto the hero before First/200 something. Your issue is that someone set the script on the ft5CMobile feat to run at First/100. Nothing should be running that early on anything.

Change the ft5CMobile feat to be a better timing like PreLevels/10000 or so and then you can set your script to run at First/500.

Oh! I didn't even think of that.
I'll go check that out on the feat. Thank you!