I need to fetch all users from the Liferay (GraphQL) based on the value of the custom field
I am using GraphQL in Liferay from /o/api

I am only able to filter the data based on email ID and user ID, here is my query for that
=======================================================================================
query {
  userAccounts(filter:"emailAddress eq 'test@liferay.com'"){
    items{
      emailAddress
      id
      name
      customFields{
        name
        customValue{
          data
        }
      }
    }
  }
}
=======================================================================================Result:======================================================================================={
  "data": {
    "userAccounts": {
      "items": [
        {
          "emailAddress": "test@liferay.com",
          "id": 20126,
          "name": "Test Test",
          "customFields": [
            {
              "name": "Speciality",
              "customValue": {
                "data": [
                  "Cardiologia"
                ]
              }
            }
          ]
        }
      ]
    }
  }
}
=======================================================================================
but i want to filter based on value of the custom fieldName of the custom field: "Speciality" and possible (selectable) value is   {Cardiologia, Dermatologia, vagh3}I have tried lot's of way to achieve this but every time failed........I am loosing my hopeCan we filter the data based on custom fields? and if Yes, then how?????