Posted 2011-April-28, 13:19
According to my rules, yes, because
1 You have bid game on strength
2. The opponents have bid on over it
To clarify on 1: you have opened the bidding, and then shown high-card values to raise to the 3-level, then accepted a game try.
If, for example, the auction was
1H 2C 3H 3S
4H 4S
then personally I would not play pass as forcing because the opening side have not shown the majority of the strength (I have an agreement that if opener wants to impose a forcing pass, he has to do something other than just bid 4H on this second auction)