Fields not positing "is_linked_with_zohocrm" & "zcrm_product_id"

Fields not positing "is_linked_with_zohocrm" & "zcrm_product_id"

I'm trying to make an instant sync between books and crm via a deluge script. Issue is that I'm unable to read or write to these fields, I know that I have the correct api field name. Are these fields only available to read if the sync writes them? 

Posting like this 

mp.put("is_linked_with_zohocrm","true");
mp.put("zcrm_product_id","crmid");

  • issue is that im receiving this response from the Console. 

  • "is_linked_with_zohocrm": false,
  • "zcrm_product_id": "",



Ideas?