[ThePhenix]

It should work:

PHP Code:

CMD:gamble(playerid, params[])
{
    new rand = random(3);//It's 3 no 1 - 3
    new string[64];
    
    if(rand == 2)
    {
        SendClientMessage(playerid, COLOR_YELLOW, "Your number landed on 3, and you won 50 dollars!");
        GivePlayerMoney(playerid, 50);
    }
    else
    {
        format(string,sizeof(string),"Your number is %d",rand);
        SendClientMessage(playerid, COLOR_RED, string);
        GivePlayerMoney(playerid, -10);
    }
    return 1;
}