Your lien is still in effect unless the debtor file a motion with the court to avoid it (meaning take it off the property). If he filed such a motion, then the HOA should have received notice of the motion so they could go to court and object. Now that the case is discharged, the HOA can continue to assess fees while he is the legal owner of the property.
AS a follow up to the previous answer, the HOA can also file a foreclosure action on the property and collect its fees from the sale of the home. The owner may want to pay before the sale occurs.