Amendment. No amendment, modification or supplement of any provision of this Agreement shall be valid or effective unless made in writing and signed by a duly authorized representative of each Party.

Amendment. No amendment, modification or supplement of any provision ofamendment to this Agreement shall be valid or effective unless madesuch amendment is in writing and is signed by a duly authorized representativerepresentatives of each Party.all the parties to this Agreement.

Amendment.Amendments. No amendment,amendment or modification or supplement of any provision of this Agreement shall be valideffective or effectivebinding with respect to a party unless madeit is in writing and is signed by a duly authorized representative of each Party.the party.

Amendment. No amendment, modification or supplement of any provisionExcept as otherwise provided herein, no amendment of this Agreement shall be valid or effectiveeffective, unless made in writing and signed by a duly authorized representativeor on behalf of each Party.the parties hereto.

Variation & Amendment. No amendment, modificationamendment or supplement of any provisionvariation of this Agreement shall be valid or effective unless madeit is in writing and signed by aor on behalf of each Party by its duly authorized representative of each Party.representatives.

Amendment. No amendment,amendment or modification or supplement of any provision of this Agreement shall be valid or effective unless madeit shall be in writing and signed by a duly authorized representativeeach of each Party.the parties hereto, and no waiver or consent hereunder shall be effective against any party unless it shall be in writing and signed by such party.

Amendment.Amendments. No amendment,amendment or modification or supplement of any provision of this Agreement shallwill be valid ordeemed effective unless made in writing and signed by a duly authorized representative of each Party.the parties hereto.

Amendment.Amendments. No amendment,change, amendment or modification or supplement of any provision of this Agreement shall be valid or effectivebinding upon the Parties unless madesuch change, amendment or modification shall be in writing and signedduly executed by a duly authorized representative of each Party.both Parties.

Amendment. No amendment, modificationmodification, variation or supplement of any provisionwaiver of this Agreement shall be valid or effective unless madeit is in writing and signed by a(or by some person duly authorized representativeby) each of each Party.the parties hereto.

Amendment. No amendment, modificationsupplement, modification, or supplement of any provisionamendment of this Agreement shall be valid or effectivebinding unless madeexecuted in writing and signed by a duly authorized representative of each Party.the parties with such writings specifically referencing this Agreement.