I've made a webhook script to create invoices for customers, but since we need to manage the invoice number manually, to be able to know the next value, I wanted to store the last invoice number as an Additional Field in the Organization Profile.

I can read that value through the API just fine, but can't seem to figure out how to update it.

Is there a way to update that field, or can you suggest any other way I could achieve the same?

Thank you!