[xMCx]

for these kind of CMDs i refer you to use zcmd

pawn Code:

CMD:setscore(playerid, params[])
{
    new targetid, score, sendername[MAX_PLAYER_NAME], receivername[MAX_PLAYER_NAME], string[128];
     if(!IsPlayerAdmin(playerid)) return 0;
    if(sscanf(params,"ui", targetid, score)) return SendClientMessage(playerid, 0xFFFFFFF, "USAGE: /SetScore [PlayerID] [Score]");
    if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, red, "Error: Your not Admin!");
    if(!IsPlayerConnected(targetid)) return SendClientMessage(playerid, red, "Error: This Player isnt Connected!");
    GetPlayerName(playerid, sendername, sizeof(sendername));
    GetPlayerName(targetid, receivername,sizeof(receivername));
    format(string, sizeof(string),"Your Score been setted to %d by admin %s", score, sendername);
    SendClientMessage(targetid, 0xFFFFFF, string);
    format(string, sizeof(string),"Admin %s Setted your score to %d", receivername, score);
    SendClientMessage(targetid, sand, string);
    SetPlayerScore(playerid, score);
    return 1;
}