The Danes face their Swedish counterparts in Sandefjord on Wednesday 30 August, kick-off 3pm. The winners will then go on to face either Austria or Norway in the final three days later, with the two losers also facing each other on the same day in the third/fourth Play-Off.
This will be Lukas' first taste of Under-19 international football, having earned four caps at younger age groups, while Mads, who joined The Bees last month from Horsens, will be looking to add to his two caps at Under-19 level.
Both players have been regulars for the B Team this season with O'Connor's side currently enjoying a perfect record of seven wins from seven matches.