Signature in Forgery but evidence stage is gone.

Hello dear Lawyers, A civil court case regarding the property is going on and the case is in the ending stage. But 2 days back I found one evidence in which the opposite party has forged my signatures 6 years back. This evidence was very important for my case but I couldn't able to submit that evidence because I didn't know about this evidence, This evidence can make the full case in my favor. Now the case is going on in junior court( Subordinate court). and in the last stage. My questions are- Q1. If the judgment of this case comes against me then can I submit this forged signature paper in the upper court? According to the law if we find important evidence in the case in the later stages, can the case be reopened in the upper court? Q2. To submit the forensic report of this forged paper, What is the way? After the evidence got accepted in a higher court, An application for forensic handwriting analysis is filed or we need to file an FIR and through police, we need to take the Forensic report? Read more at: https://www.lawyersclubindia.com/experts/modify_message.asp?entry_id=869760