[Error] error 025: function heading differs from prototype

forward OnQueryFinish(index[],sqlresultid,extraid,SconnectionHandle);
public  OnQueryFinish(index[],sqlresultid,extraid,SconnectionHandle)    <---- Die Zeile wo es den Error gibt
{
	new query[3250],result[64],rows,fields;
	cache_get_data(rows,fields);
	switch(sqlresultid)
	{
	case _SQL_GANGZONE_INSERT:
	{
	    cache_get_data(rows,fields);
		if(!rows)
		{
			format(query,sizeof(query),"INSERT INTO "#SERVERTAG"_gangwar (GangZoneID,GangWarZoneOwner) VALUES ('%d','0')",extraid);
		    mysql_function_query(mysqlcon,query,true,"","");
		}
	    return 1;