forward OnOSetNameCheck(playerid, newname[], oldname[]); //check if newname exists
public OnOSetNameCheck(playerid, newname[], oldname[])
{
	new rows, fields;
	cache_get_data(rows, fields);

	if(strlen(newname) > MAX_PLAYER_NAME) return SendClientMessage( playerid, COLOR_GREY, "{FF0000}Error:{FFFFFF} the new name is too long." );
	if(rows) return SendClientMessage(playerid, COLOR_GREY, "{FF0000}Error:{FFFFFF} that name is taken.");

	new query[128];
	mysql_format(sqlGameConnection, query, sizeof(query), "SELECT ID, `BizKey`, `pHouseID`, `FMember`, `RadioStation` FROM `players` WHERE `Name` = '%e'", oldname);
	mysql_pquery(sqlGameConnection, query, "OnOSetNameProcess", "iss", playerid, newname, oldname);
	return 1;
}