ZAPIER Upload a gmail attachment to an Invoice in Zoho Books

Hi,

can you please help me with the Webhook to upload a gmail attachment into a Zoho Books Invoice? I can succesfully connect, but I'm getting the error

"Please ensure that the JSONString has less than 100 characters."

This is what the code looks like:

https://books.zoho.com/api/v3/invoices/XXX/attachment?organization_id=XXX

Payload Type

form

Data

JSONString

{"can_send_in_mail": True, "attachment":"hydrate|||.eJxN0cmSojAAgOFXmcq5nQJJQLzZEnFhbUHUqSkKEyI0axMQY1e_-zjLYe7_d_o_AclSUsRFKsAcQklCL4A0dZ_WfdyLNgVz4IAXkNe8T2qSxjkFcw1KSEUz5QWwPC1pXCfV7y7p-4Rk1VPypyjGpLtyMP8EVcp5cv1LgawyCCFTEaWXhCL2LP938x-f4E-3cMx3uo235vsllEP5oIa3vbS4cwkxAjcOVOhj61ynd2-pBGLXrtblmpskUJcVbwYnXKbd8lq9iy4_--1eFxtNECwlSq5GhnugSq_thedL5NJyE6sDOjbGSm3Cwk1ot7OknbnP-mC0Fs1NdlttYLqCGDwZK3yU_GWHMl0xzOnh7MZ9iXeaWcql4FjYEzhZKHtY5ess4lrsns37RW6208NpE-me5dryx2AZoeclSsZGlc7GWuRRG5X5YFBa2dxlVn2EE-Futo_jBNnqY0odX-gb6XIv7mOAqPL6hgNWdeVreGambeev6EKs9GM0325YUKNZR6fyGOga5J73aHGI9QWb-EeSVx83ux6pNePDQLmqu1l-QNCZ4VMRHc7RGrX9qveNVg0I6aTaufn7eNZc4ynDBYLYlp-v_q1eYVmH3-w07UnS0e8tZeDr59fXLyu8wc4:1ikbYZ:d8sxAT2yh_GRa1xByXoTvmEcYQ|||hydrate"}

Wrap Request In Array

File

Unflatten

yes

Basic Auth

Headers

Authorization

Zoho-oauthtoken XXX

Content-Type

application/x-www-form-urlencoded;charset=UTF-8