St Mirren were handed a rematch with Celtic, who they beat in December's League Cup final, after beating Partick Thistle 2-1 to reach the Scottish Cup semi-finals.
And manager Stephen Robinson tells BBC Scotland: "If you're going to win a cup, you have to beat Celtic or Rangers at some stage – so why not?
"There's a belief that we can do it. We need to be the best version of ourselves – that we haven't been in recent weeks.
"We found a way to win tonight. We have an opportunity to go to Hampden, which for this football club is incredible.
"We've got injuries galore. Marcus Fraser is out for eight weeks, Mika Mandron is out for six or eight weeks and Kion Etete got injured in the warm-up – so we had no strikers to bring on. But we found a way."
Striker Jake Young stepped up with his second goal in two games with what proved to be the winner.
"I've watched Jake for a couple of years," Robinson says of the 24-year-old signed from Stevenage in January. "We got the opportunity to get him up and we knew it would take time for him to hit the ground.
"But he's the most natural goalscorer we have. And, for a club like St Mirren, that's difficult to find.
"He scores out of nothing, two great finishes and, when you're not on top of your game, good strikers win games for you."
