param = Map();
param.put("accept_retainer",true);
param.put("retainer_percentage":"100");
approve_quote = invokeurl
[
  url :"https://www.zohoapis.com/books/v3/estimates/" + quote_id + "/status/accepted?organization_id=" + organization_id
  type :POST
  parameters:param
  connection:"zoho_apps_connection"
];