After the first motion of our Mutual Consent divorce in 2011, an affidavit was drafted where both th

After the first motion of our Mutual Consent divorce in 2011, an affidavit was drafted where both the parties will not claim for maintenance ever but no one mentioned anything about the properties that we had. A few days back, my wife asked my for 10 lakhs to transfer the joint property to my name. This property is still on load and all the amount is solely paid by me.

My wife's name is there as a co-buyer in the said property. We agreed before the affidavit that she will transfer the property in my name but now she asking me for money. What can I now do?