Glentoran will face Portdown in the 2015 Irish Cup Final.
Glentoran came through 1-0 against Crusaders at Mourneview Park on Saturday.
Striker Curtis with the winning goal for the Glens.
Ronnie McFall’s Portadown saw-off Ballymena United 3-1 in their semi-final.
Mark McAllister fired in the opener in the fourth minute and Michael Gault drilled in number two on the quarter hour.
It was 3-0 when Peter McMahon ran clear to lob keeper Dwayne Nelson.
Ballymena sub Darren Boyce pulled a goal back 20 minutes from the end, but it was all in vain.