Customer Self-Service Portal

JSONPath Assertion not working

I have created 1 JSONPath which is working fine on https://jsonpath.com/ But I'm configuring in JSON Path expression, it is giving me error :

JSON Path expression assertion failed

Not sure in which format Site 24X7 is accepting below JSON Path :

 $.environments[*].dimensions[?(@.name=="SFAPI,NAD_DIGITAL")].metrics[?(@.values > 40)]

Sample JSON :

{
  "environments": [
    {
      "dimensions": [
        {
          "metrics": [
            {
              "name": "sum(message_count)",
              "values": [
                "35.0"
              ]
            }
          ],
          "name": "SFAPI,NAD_SF"
        },
        {
              "metrics": [
                {
                  "name": "sum(message_count)",
                  "values": [
                    "44.0"
                  ]
                }
              ],
              "name": "SFAPI,NAD_DIGITAL"
        }
      ],
      "name": "nad-prod12FFFHHF"
    }
  ],
  "metaData": {
    "errors": [],
    "notices": [
      "Table used: uap",
      "Source:BB",
      "query served by:job_1234"
    ]
  }
}