Selectable_if with a false bolean How make it work?

I want people could select one option if he doesn’t have the option already so I try:
----*selectable_if (poison) false #Poison mastery
--------*goto 1

but doesn’t work how could I do that?

    *selectable_if (poison = false) #Poison mastery 
        *goto 1 

Let me know if that doesn’t work for some reason. I’ve never been too sure about having conditionals on the same line as choices, but I think it works the same.

works fine thanks I was really stupid not figure it by myself sorry :frowning: