Query Test Plan with Rest API

Hello,

I'd like to query my RQM projects to fetch 'Approved' Test Plans which contains UAT keyword in the category combobox.

I have written some REST Queries like:

https://server:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/PROJECTNAME/testplan?fields=feed/entry/content/testplan/(title|description|category[@term='Test Phase' and @value='User Acceptance Test'])

This filters my plans and bring me 2 Test Plans as I expected.

I enhanced the query like:
https://servername:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/PROJECTNAME/testplan?fields=feed/entry/content/testplan/(category[@term='Test Phase' and @value='User Acceptance Test'] | owner[@ns3:resource='https://wat01ibmclm.int.teb.com.tr:9443/jts/resource/itemName/com.ibm.team.repository.Contributor/P21885'])

That brought 1 test plan as expected because user P21885 has only one Test Plan assigned to him.

I tried to filter my plans according to Approval status:
https://SERVERNAME:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/PROJECTNAME/testplan?fields=feed/entry/content/testplan/(category[@term='Test Phase' and @value='User Acceptance Test'] | state='com.ibm.rqm.planning.common.new')

But this is not working. It doesnt filter according to the status.

How should I combine my queries and get approved test plans that has User Acceptance Test set as category.

I also checked https://jazz.net/wiki/bin/view/Main/RqmApi#HTTP_GET_Requests but no get query for status has worked.
Thank you in advance