sufficient case in support of its plea that the supplementary agreement is actuated by fraud, coercion and undue influence. Though 08.04.2007 is the date put up by the petitioner under his signatures on the said agreement as against 26.04.2007 on behalf of the respondents, but the fact remains that as against the claim of Rs.25 lac or so, the petitioner has been paid a sum of Rs.17,73,344.72/- in full and final satisfaction of its claim. The petitioner has not denied the acceptance of the aforesaid amount. After the receipt of the said amount, there is no objection raised by the petitioner that its signatures were obtained in advance as is pleaded in the rejoinder and there was any coercion, fraud or undue influence. In fact, in the notice issued after the payment was released i.e. 08.06.2007, the petitioner has not made any grievance in respect of his signatures being obtained in advance as is pleaded in the rejoinder. The petitioner has not even disclosed the signing of the agreement on 08.04.2007 in his petition under Section 11 of the Act. Such fact has been asserted for the first time in the rejoinder to the written statement filed by the respondents. The petitioner has not disputed the execution of the supplementary agreement at the first opportunity after receiving of payment; in the demand notice dated 08.06.2007 or in petition under Section 11 (6) of the Act. Therefore, the plea in the rejoinder is an after thought. Thus, the supplementary agreement cannot be said to be executed from the petitioner by fraud, coercion and undue influence.”