Dynamics Portal FetchXML returns empty

{% fetchxml MyFetchSearch %}
<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false" count="1" returntotalrecordcount="true" page="1" >
  <entity name="new_entity">
     <attribute name="new_entityname" />
    <filter type="and">
       <condition attribute="new_entityattribute" value="1" operator="eq"/>
    </filter>
  </entity>
</fetch>
{% endfetchxml %}{ 
  "Result" : "{{MyFetchSearch }}"
}