No amendment or modification of the terms or conditions of this Agreement shall be valid unless in writing and signed by the parties hereto.

Amendment. Except as otherwise provided herein, no amendment of this Agreement shall be valid or effective, unless in writing and signed by or on behalf of the parties hereto.

Amendments. No amendment or modification of this Agreement shall be effective or binding with respect to a party unless it is in writing and is signed by the party.

Modifications. No amendment or modification to this Agreement shall be effective unless made in writing.

No modification or waiver of any of the provisions of this Agreement shall be effective unless in writing and signed by the party against whom it is sought to be enforced.

Amendment. No amendment or modification of this Agreement shall be effective unless it shall be in writing and signed by each of 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.

Amendments. No change, amendment or modification of this Agreement shall be valid or binding upon the Parties unless such change, amendment or modification shall be in writing and duly executed by both Parties.

Modifications. No modification, amendment, supplement to or waiver of this Agreement shall be binding upon the parties hereto unless made in writing and duly signed by both parties.

This Agreement may not be modified or amended except by an instrument in writing signed by the parties hereto.

Any modifications or amendments to this Agreement must be in writing and signed by both parties or they will have no force and effect.

No amendments or changes to this Agreement shall be effective unless made in writing and signed by duly authorised representatives of the Parties.