IMPs (Swiss Teams, 8 board matches, last match, table 1).
If it mattters: playing Acol, weak NT, 4 card majors, "majors first". Whatever, partner has shown a minimum opener with 6 hearts, and 10HCP would be enough to open 1H with a 6 card suit.
What I did was wrong: I expect to be told it was obviously wrong.
Do the right thing and you win enough IMPs to get the silverware.