error 035: argument type mismatch (argument 1)

	if(strcmp(cmd, "/trainboxing", true) == 0)
	{
	    if(IsPlayerConnected(playerid))
	    {
        if(PlayerInfo[playerid][pJob2] != 2) {
            SendClientMessage(playerid, COLOR_GREY, "You are not a Fight instructor!");
            return 1;
        }
				tmp = strtok(cmdtext, idx);
				if(!strlen(tmp))
				{
					SendClientMessage(playerid, COLOR_GRAD2, "USAGE: /Trainboxing [playerid/PartOfName]");
					return 1;
				}
				giveplayerid = ReturnUser(tmp);
				if(IsPlayerConnected(giveplayerid))
				{
	   				if(giveplayerid != INVALID_PLAYER_ID)
				    {
	       				GetPlayerName(giveplayerid, sendername, sizeof(sendername));
						SetPlayerFightingStyle (giveplayer, FIGHT_STYLE_BOXING);
						format(string, sizeof(string),"You have given a Fight style to %s.",giveplayer);
						SendClientMessage(playerid, COLOR_GREY, string);
						format(string, sizeof(string),"You are given a Fight style.");
						SendClientMessage(playerid, COLOR_LIGHTBLUE, string);
						format(string, sizeof(string),"[ADMIN]: %s has given a Fight style to %s.",sendername, giveplayer);
						SendAdminMessage(COLOR_LIGHTRED, string);
						format(string, sizeof(string),"[ADMIN]: %s has given a Fight style to %s.",sendername, giveplayer);
						SendTesterMessage(COLOR_LIGHTRED, string);
						new y, m, d;
						new h,mi,s;
						getdate(y,m,d);
						gettime(h,mi,s);
						format(string,sizeof(string), "(%d/%d/%d)[%d:%d:%d] %s [CMD] -> /trainboxing %s",d,m,y,h,mi,s,giveplayer, sendername);
						AdminLog(string);
					}
				}
				else
				{
				    SendClientMessage(playerid, COLOR_GREY, "   That player is Offline !");
				    return 1;
				}
		}
		return 1;
	}

SetPlayerFightingStyle (giveplayerid, FIGHT_STYLE_BOXING);