apply import/export policies vrf under openconfig network-instances ?

[a.ala]

i am trying to push this configuration to an IOSXrv9000 VERSION IOSXR 7.8.1/

<network-instances xmlns="http://openconfig.net/yang/network-instance">

   <network-instance>

    <name>myvrf</name>

    <inter-instance-policies>

          <apply-policy>

            <config>

              <import-policy>POLICE_IMPORT_1</import-policy>

              <export-policy>POLICE_EXPORT_2</export-policy>

            </config>

          </apply-policy>

        </inter-instance-policies>

i am getting the error: bad element import-policy !?