function内でのsneak検知ができない

function sneak(p: player):
    if {_p} is sneaking:
        broadcast "スニーク中"
    broadcast "a"

every seconds:
    loop all players:
        sneak(loop-player)

function sneak(p: player):
    if {_p} is sneaking:
        broadcast "スニーク中"
    broadcast "a"

every seconds:
    loop all players:
        sneak(loop-player)