[source, ruby]
----
response = client.search(
  body: {
    query: {
      bool: {
        filter: {
          script: {
            script: "\n            double amount = doc['amount'].value;\n            if (doc['type'].value == 'expense') {\n              amount *= -1;\n            }\n            return amount < 10;\n          "
          }
        }
      }
    }
  }
)
puts response
----
