Jay Donnelly strikes in extra-time to give League Cup holders Cliftonville a 1-0 win over Warrenpoint Town in the Milltown semi-final.
Donnelly's backpost volley from Stephen Garrett's cross was enough to win the tie for the holders, who now face Ards in the decider in February.
Warrenpoint players Mark Clarke and Liam Bagnall were sent-off, while manager Barry Gray was also dismissed.
Gray felt that the officiating at Tuesday's game, which was played in dreadful conditions, lacked commonsense.