Disguise Skellet.

[Shadow Klassic]

How do i disguise mob's skins in skellet with protocolib and libsdisguise. I tried doing this:

every 3 ticks in world "world":
    {timerpowerup} is true
    loop all players:
        loop all mobs:
            set {_lpP} to loop-player
            set target of all monsters to {_lpP}
            set {_d} to a new disguise with type ZOMBIE
            set disguise of loop-mobs to {_d}

but it gives me this error

any ideas?
[doublepost=1615418362,1615352163][/doublepost]Please somone reply :C
[doublepost=1615491222][/doublepost]somoneeeeeeeeeee