Modification. No modification, amendment, or waiver of any of the provisions of this Agreement will be effective unless in writing, specifically referring to this agreement, and signed 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.

Modification. No supplement, modification or amendment of this Agreement will be binding unless made in a written instrument that is signed by all of the Parties hereto and that specifically refers to this Agreement.

No amendment, modification, variation or waiver of this Agreement shall be effective unless it is in writing and signed by (or by some person duly authorized by) each of the parties hereto.

Amendments. No amendment or modification of this Agreement will be deemed effective unless made in writing and signed by the parties hereto.

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.

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

No amendment, modification, variation or waiver of this Agreement shall be effective unless it is in writing and signed by (or by some person duly authorised by) each of the parties hereto.

Modification. No variation of or addition to the Agreement or any part thereof shall be effective unless in writing and signed on behalf of both Parties.

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