Motor Accidental Claim

I have a case of motor accidental claim pending in Sharanpur Court. I have two queries. 1.  The advocate and I agreed on a certain percentage say x% as his fee. Now he is demanding the fee on interest as well. Should I pay him x% of awarded amount only or x% of (awarded amount+interest amount). 2. There is a fd opened in a bank as ordered by court. He is saying that the fd receipt is still with court and a court order will be needed after the fd is matured. Is that so. is a court order required after the fd is matured. Also who gets the keep the fd receipt until then. Should I ask him to give me the FD. Thanks