i need a toggle

i need a toggle that i can activate by crouching
execute as @a[tag=link,tag=is_crouching] unless score @s glider_toggle matches 1 run scoreboard players set @a[tag=link] glider_toggle 1
execute as @a[tag=link,tag=is_crouching] unless score @s glider_toggle matches 0 run scoreboard players set @a[tag=link] glider_toggle 0
i already have this but only the top 1 works