[Gn_Snake]

Hi,
receive this error when user view the page Soccer betting

Invalid SQL:

			SELECT (_wr * 0) +
			((_count - _wr - _rr - _rd) * 1) +
			(_rd * 2) +
			(_rr * 3) AS points
			FROM (
				SELECT userid, COUNT(*) AS _count,
				SUM(score_key != bet_score_key) AS _wr,
				SUM(bet_home=points_home AND bet_away=points_away) AS _rr,
				SUM(CAST(bet_home - bet_away AS SIGNED)=(points_home - points_away)
				AND NOT (bet_home = points_home AND bet_away = points_away)) AS _rd
			FROM HG_soccer_user_bet AS b
			INNER JOIN HG_soccer_match AS m ON(m.id=b.match_id)
			WHERE userid=1 AND score_key>0 AND match_is_finished=1
			GROUP BY userid) AS userpoints;

MySQL Error   : BIGINT UNSIGNED value is out of range in '(`hardware_Hardwaregame`.`b`.`bet_home` - `hardware_Hardwaregame`.`b`.`bet_away`)'
Error Number  : 1690

Help me
thx