Map dependency on Multiselect picklist

Map dependency on Multiselect picklist

I need help in Zoho CRM. I have 2 multi-select picklists. For example,
Picklist A has country names.
Picklist B has state names.

Now I want to show states on the basis of the selected country from Picklist A.

Both are multi-select fields, so the standard map dependency feature is not working. Client script is also not working.
Is there any way to achieve this?