In today’s match against the St George Illawarra Dragons, the 24-year-old ran at centre.
Curtis Scott and Young Tonumaipea, who are nursing injuries, opened the door for Olam.
He has been on the verge of debut since late last season, repeatedly being named the 18th man, or first emergency.
Coach Storm Chris Bellamy had kept Olam on standby early in the week when both Scott and starting winger Suliasi Vunivalu were in doubt.
Olam has been with the team since November 2016.
He has made an impression with the Storms feeder club Sunshine Coast Falcons.
Meantime, a 4th place Storms could not keep up with a thundering St George, who took the game right out of Kogarah Oval today with a 34-14 win, to cement their leading spot on the NRL ladder.