Amendments. Changes and additional provisions to this Agreement shall be binding on the Parties only if agreed upon, laid down in writing and signed effectively by the Parties.

Amendments. Modifications and/or amendments of this Agreement must be in writing and signed by the Parties.

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.

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.

Amendments. No amendments to this Agreement shall be binding unless in writing and signed by both parties.

Modifications. All modifications or amendments to this Agreement shall be effective only when reduced to writing and signed by both parties hereto.

Amendment. This Agreement may only be amended by an agreement in writing signed by all 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. This Agreement may be amended only by written instrument duly signed by each of the parties to this Agreement.

Modifications and Amendments. The terms and provisions of this Agreement may be modified or amended only by written agreement executed by the parties hereto.