f11 key is not spporting

[afeefmali]

if (!SvAddKey(playerid, 0x7A)) {
printf("Failed to add key for player %d\n", playerid);
}

console
Failed to add key for player 0

[Walter-Correa]

Wouldn't it be because F11 is the key to activate the sampvoice menu? It would be strange if you could assign this key to a channel.