Mam problem z SideBarem

Witam,

mam problem związany z SideBarem. Oto cały kod:

variables:
    {stone.%player%} = 0

every 1 second:
    loop all players:
        wipe loop-player's sidebar
        set name of sidebar of loop-player to "&6&lLava&b&lHC"
        set score "    &8&m◄&7&m-&3&m-&b&m►◄&3&m-&7&m-&8&m►" in sidebar of loop-player to 17
        set score "&9» &fOnline" in sidebar of loop-player to 16
        set score " &9« &b%number of all players% &9/ &b15 &9»" in sidebar of loop-player to 15
        set score "&1" in sidebar of loop-player to 14
        set score "&9» &fDzisiaj" in sidebar of loop-player to 13
        set score " &9« &b%now% &9»" in sidebar of loop-player to 12
        set score "&a" in sidebar of loop-player to 11
        set score "&9» &fPing" in sidebar of loop-player to 10
        set score " &9« &b%loop-player's ping% &9»" in sidebar of loop-player to 9
        set score "&2" in sidebar of loop-player to 8
        set score "&9» &fWykopany stone" in sidebar of loop-player to 7
        set score " &9« &b%{stone.%player%}% &9»" in sidebar of loop-player to 6

on mine of stone:
    add 1 to {stone.%player%}

Błąd jest taki, że:

'score " &9« &b%{stone.%player%}% &9»" in sidebar' is not a number (sidebar.sk, line 19: set score "&9« &b%{stone.%player%}% &9»" in sidebar of loop-player to 6')

prosze o jak najszybszą pomoc! Z góry dzięki