Key cycle with cooldown

RButton::keycycle("u","6")


keycycle(key0,key1){ ;T=Time,K=KeyNum,C=Cooldown
    static T:=0, K:=0, C:=3000
    if (K=0) || (K=1 && (A_TickCount-T)>=C)
    {
        send % key%K%
        T:=A_TickCount , K:=!K
    }
}