Service tax return

We made registration for service tax under Reverse Charge Mechanism,
as we are the receiver of Legal Service.But in the quarter ended April
2012 to June 2012 we didn't receive any legal service. So we filled
the Nil Return of Service Tax for the period ended april 2012 to June
2012 under Legal Service Category & we got FILLED Status for our
Return.

Please Advice us whether we fill the Proper return for service
tax(ST3) for period ended April 2012 to June 2012.