[Help] use keycheck as true/false in capture

[theonephoenix]

hello i am trying to make a config, i wont tell you which one because i want it to be a suprise, but how do i make a keycheck come up as true or false in capture

 

lets say 

if page contains "img"

img = true

else

img = false

[theonephoenix]

dumb?

yes i found key check is impossible for this, but i can use a fuction to reply true if a key is found