[MasterJoker]

here you go

pawn Код:

/* top of script */

new IsPlayerInJetPack[MAX_PLAYERS];

COMMAND:getjetpack(playerid, params[])
{
    if(GetPlayerScore(playerid) > 100)
    {
        if(IsPlayerInJetPack[playerid] == 1) return SendClientMessage(playerid, COLOR_RED, "You already have your JetPack!");
        SendClientMessage(playerid, COLOR_GREEN, "Enjoy with your jetpack!");
        IsPlayerInJetPack[playerid] = 1;
        SetPlayerSpecialAction(playerid, 2);
    }
    else return SendClientMessage(playerid, COLOR_RED, "You do not have enough score to ride a JetPack!");
    return 1;
}