[Dayrion]

By the way, health is a Float. So your code should looks like:

PHP код:

CMD:sethp(playerid, params[])
{
    new Float:bet;
    if(sscanf(params, "f", bet)) return SCM(playerid, -1, "USAGE:/sethp (hp).");
    new string [128];
    format(string, sizeof(string), "Your Hp Has Been Setten To %.2f",bet);
    SCM(playerid, -1, string);
    SetPlayerHealth(playerid , bet);
    return 1;
}