Changing default value of a choice field dynamicaly -Solved-

Hellow everyone

I hope i'm not bothering you guys too much with my question, but i need help again.

There will be 2 different style folders attached to my game folder.

in my game file, i have a choice field that can either by "Yes" or "No"
i would like that field to have a different default value depending on the style used
so that, when i create a new card, value is on "Yes" if i'm using style A and on "No" if i'm using style B.

i tried to use add a script to the card field definition that says :
if StyleCheck == "A" then "Yes" else "No"
i get an error "can't convert from function to string"

when i tried :
if StyleCheck == "A" then fieldX := "Yes" else fieldX := "No"
i get the same error with an additionnal warning "Can only assign to variable" -- "warning: last statement of a function should be an expression, that is, it should return a result in all cases" -- "expected closing '}' for this '{' instead of 'Yes' " -- "expected 'end of input' instead of 'else' "

also tried
if StyleCheck == "A" then card.fieldX.content_default := "Yes" else card.fieldX.content_default := "No"
exactly the same result



i'm sure i'm running in circles around the right solution but i can't seem to find it
Would anyone be kind enough to point it to me ?