Gutted Stephen Robinson is demanding clarity on the handball rule after St Mirren were denied what he felt was a stonewall penalty at Tynecastle.
The Buddies created numerous chances in the capital and thought they’d finally found a way back into the game late on when Scott Tanser’s cross hit Hearts defender Kye Rowles' arm in the box.
A VAR check took place but referee David Munro wasn’t called over to check the decision, with the video officials happy with his initial call.