Multivalued attribute sync

Hi Experts,

I have one IDN attribute of type string which stores value ‘A,B’. I would like this to sync with one multivalued attribute in target source.

I have below configuration under create provisioning policy.

  {
            "name": "TargetAttributeName",
            "transform": {
                "attributes": {
                    "name": "IDNAttribute"
                },
                "type": "identityAttribute"
            },
            "attributes": {
                "cloudDelimiter": ","
            },
            "isRequired": false,
            "type": "string",
            "multi": true
            
        }

This is not working as it is adding complete value ‘A,B’ not as list to the target. I am referring below link for this.

Best Practices: Provisioning Multi-Valued Attributes - Compass (sailpoint.com)

were you able to find solution for this problem?