Updating a contact record's multiple select field

Updating a contact record's multiple select field

Hi folks,

I have a multiple select field (called Mailing Lists) in Zoho CRM which I wish to set to the text "Weekly Email"

I have created a step in Zoho Flow using a Create or Update Contact.

In the Mailing Lists field, I put the text "Weekly Email"  (including the quotes) but the flow returns an error requesting a jsondatatype.  I have tried {'Weekly Email'} but I still get the same error. Also tried Weekly Email (without the quotes)

How do I format an update of a multiple select field  with Zoho Flow Create or Update Contact?

Best regards,
Joe