도와주세요!loop player의 모자를 감지하려 했는데, 오류가 났어요!

코드:

every 10 tick:
    loop all players:
        if loop player's helmet is not air:
            set {_lore::*} to uncolored lore of loop-player's helmet
            loop  {_lore::*}:
                if {_lore::%loop-index%} contains "체력":
                    set {_health} to "%{_lore::%loop-index%}%"
                    replace all " " and "-" and "체력" with "" in {_health}
                    set {helmet::%loop-player%::health}to {_health} parsed as number
        else: # 추가로 여기에도 에러가 났어요!
            delete {helmet::%loop-player%::*}

에러 내용 : 

[Skript] Can't compare 'loop player's helmet' with an item type (스텟.sk, line 8: if loop player's helmet is not air:')

[11:42:18 ERROR]: [Skript] 'else' has to be placed just after an 'if' or 'else if' section (스텟.sk, line 15: else:')