Dear Mr. Rohit, Please note that as the case is related to forgery, therefore you cannot plead civil nature. The complainant as made his/her complains, the police will investigate and file a charge sheet it found guilty. Till then it is preferable to cooperate with the police. At the same time it is your right to get a copy of the charge sheet so that you can plead innocence.
Please also file a bail on the first day of appearance before the Court, but it is preferable to go for an anticipatory bail because you already aware of the complaint.