Bought room in uncles name but now he is unwilling to transfer

I purchased a room in MUMBAI 15 year back, at that time i was new to this city so i wasnt having document so i buyed that room in my uncles name, my uncle was too trustworthy , i thought after having my document i will transfer it to my name, but after few year i discussed to transfer, but nw he is saying , why do i qive ,it is mine, after many arguements, fights he decided to have family settlement for 50-50%. we made it in a 100rs stamp paper of family settlement. nw the problem is that chawl has under went in (SRA) building plan, in that he cunningly made his registration in that sra plan, but he didnt included my name, many times we said to sell that room and what ever the value will get will divide in 50-50 % but he not ready to that, he is waiting when that sra will allot room in his name, he wanted whole 100% share. sir you say hw can i get my property, m not expecting all atleast i want my 50% share. kindly help me?