How do I ... Points deduction

i have created BG selection

6 options are set

.

if i have 100 point by click 1 BG unlocked

.

now my question is

.

if i unlocked BG

then i will subtract 100 from points G.Variable

means points became 0 now

.

so will it effect my unlocked BG

why don't you test it?

if bg is always updated (e.g. every tick) then yes. it it's triggered just once, no

Why? it shouldn't affected the BG since you just unlocked one BG.