[20] It is also contended by the defendant that ADW 2 was executed to vary the interest rate and repayment sum in ADW 1. Hence, parties are still bound by the terms of ADW 1 except for the provision of the increase in interest rate and repayment sum payable by the plaintiff, which should follow what has been agreed upon. [21] However, even if ADW 2 is to be taken as a variation of ADW 1, that does not absolve of the requirement of a valid consideration from the defendant to the plaintiff in ADW 2. In this respect we refer to section 63 of the CA which states, if parties agree to alter the said contract, the original contract need not be performed. When the plaintiff and the defendant here altered the rate of interest in the original contract ADW 1, essentially, they are altering the original contract. As a result, a new contract is formed, i.e. ADW 2. If the parties cannot establish all the elements of a valid contract in ADW 2, the agreement is void and the parties’ obligations are only confined to the original contract (refer to the FC case of Yong Mok Hin v United Malay States Sugar Industries Ltd [1967] 2 MLJ 9, at p 16) [22] It is trite that in contract law, “the agreement to vary a contract will need to be supported by consideration, namely, something of value must be given in exchange for the variation. If there is no such consideration, then the validity of the variation can be subject to challenge” (refer to 555 Film Sdn Bhd & Ors v Adamancy Construction Sdn Bhd [2023] 1 LNS 884). In the Supreme Court case of LYL Hooker Sdn Bhd v Tevanaigam Savistri & Another [1987] 2 MLJ 52 which held that “novation is a new contract. It extinguishes rights and obligations under the old contract for which the new contract is made. Being a new contract, there must be consent by all parties and there must be consideration, the rights and obligations under it are not those transferred from the old contract which is already extinguished.” [23] Therefore, even if ADW 2 is a variation of ADW 1 as was termed by the defendant, it still requires consideration for it to be valid. [24] We were also urged to infer from the documents and the conduct of parties especially on the part of the plaintiff that has agreed, without coercion or influence, to enter into ADW 2 with the defendant. Payments were also made to the defendant as a result of the increase in the rate of interest in ADW 2. In other word, there was compliance by the plaintiff with its obligations under ADW 2. Hence the plaintiff is estopped from challenging the validity of ADW 2. [25] On this point, we held that estoppel cannot be used to defeat clear statutory provision, namely the requirement for consideration in a valid contract (refer to Silver Corridor Sdn Bhd v Gallant Acres Sdn Bhd & Anor [2016] 7 CLJ 823) [26] Given the aforesaid, we proceed to answer the questions posed as follows: Question 1: [27] The question is not premised from the facts of the case. There is no extrinsic evidence relied upon by the COA and neither is there any extrinsic evidence to support the assertion that ADW 2 is supported by consideration. [28] We decline to answer Question 1. Question 2: [29] There was no practical benefit to PKA by KDSB by entering into the ADW2. KDSB Never asserted at any material time that it would not be able to carry out the works under ADW 1 or NADW if ADW 2 was not entered into. [30] The case of Williams v Roffey Bros and Nichollas (contractors) Ltd 1991 1 QB 1 was never addressed nor discussed by the HC and COA. The decision in Williams v Roffey Bros & Nicholls (Contractors) Ltd [1989] EWCA Civ 5 decided that in varying a contract, a promise to perform a pre-existing contractual obligation will constitute good consideration so long as a benefit is conferred upon the 'promisor'. This decision is inconsistent with the long standing rule that consideration, being the price of the promise sued upon, must move from the promisee (refer to Stilk v Myrick [1809] 2 Camp 317 and Foakes v Beer [1881-85] AER Rep 106). It departed from the previously established principle that promises to perform pre-existing contractual obligations could not be good consideration. A different constituted English Court of Appeal in Re Selectmove Ltd [1995] 2 AER 531 declined to follow Williams v Roffey. Similarly the English Commercial Court in South Caribbean Trading Ltd v Trafigura Beheever BV [2004] AER 334 (Nov) set out its hesitance on the application of the principle as enunciated in Williams v Roffey. Even in Australia, in Slipper v Berry Buddle Wilkins Lawyers [2015] NSWSC 810 affirmed the general rule that to perform an existing duty is not fresh consideration. [31] There are no reported Malaysian cases that have accepted the application of the “practical benefit” principle as set out by William v Roffey. The Court of Appeal in Aspac Lubricants (M) Sdn Bhd (Formerly known as Castrol (M) Sdn Bhd) v Ketua Pengarah Dalam Negeri [2007] 6 MLJ 65 prefer to exercise caution on its applicability, due to the criticism and the hesitancy of the commonwealth jurisdiction in accepting the principle enunciated in William v Roffey. We agree with the submission by the plaintiff that it would not be appropriate to apply the principle in William v Roffey to the present appeal as it was never raised nor the full impact of the case argued in the Courts below and the lack of clarity on the application of the principle. [32] In any event the facts in William v Roffey can be distinguished with the present appeal. There the facts are such that, in the event the plaintiff was unable to complete the works, the defendant would be liable under a penalty clause to the main contract. There it was a practical benefit to the defendant to ensure the plaintiff completed its contractual obligation. In our case there was no practical benefit to PKA by KDSB by entering into the ADW 2. [33] Hence, we decline to answer Question 2. Question 3: [34] We answer in the negative. Question 4: [35] We answer in the negative. Estoppel cannot operate against a statute to legitimize an agreement which is void under the CA CONCLUSION: [36] We do not find any error on the part of the COA in arriving at its decision. We therefore, dismissed the appeal and affirmed the decision of the Court of Appeal with costs. So, we grant cost at RM100,000.00 to be paid to the Respondent subject to allocator. Zabariah binti Mohd Yusof, FCJ Hasnah binti Mohammed Hashim, FCJ Abdul Karim bin Abdul Jalil, FCJ Dated: 2.9.2024 COUNSEL: Dato’ Prem Ramachandran together with Porres P. Royan, Shaarvin Raaj a/l Selva Kumar and Craig Ho Wai Ping for the Appellant. (Messrs. Kumar Partnership) Nimalan Devaraja together with Wong Shun Yong for the Respondent. (Messrs. SKRINE)