inglés al español Jurídico/Patentes Negocios / Comercio (general) MULTIPLE DISBURSEMENT GRID PROMISSORY NOTE

Hello, everyone!
I would really appreciate if you can help me with the translation of this term. This is the context:
"(...)hereby unconditionally promises to pay to the order of (..) the principal sum of (...) ( or such lesser amount as shall be advanced by the Lender to Maker and
evidenced hereby as set forth on the grid attached hereto as Schedule 1)"
Thank you very much!