Do we cash and accept these terms for our final release of payments? We are still wanting to charge a lien fee.

We filed a bond lien on a new school build and had set forth the expectations that if we had to file a lien, we would charge an additional fee of $1,500.00 and a monthly interest rate of 1.5%. Do we sign and return the final lien waiver for payment and then petition the court for the additional fee before we lift the lien? Not sure what the proper protocol is at this point? Many thanks for considering my request.