Import text with line break into custom field multiline (textarea)

Import text with line break into custom field multiline (textarea)

Hello

We success to sync our custom fields  from our app to Zoho CRM, but how can import the line break ?
We try with :
  1. <br>
  2. \n
  3. \r\n
but with no success.
If we make break line into that field in Zoho CRM it works, and it keep them after saved, 
Thanks for help