Unable to execute some actions

Was able to PUT/GET successfuly (seeing 200 OK) the xml file for push-mpls-action (and set-dl-src-action, set-dl-dst-action, set-vlan-id-action).

But we are unable to see flows on the switch.
mininet@mininet-vm:~/odl_testing/xmls$ sudo ovs-ofctl -O OpenFlow13 dump-flows s1
OFPST_FLOW reply (OF1.3) (xid=0x2):
mininet@mininet-vm:~/odl_testing/xmls$

RESTCONF
http://192.168.56.103:8080/restconf/config/opendaylight-inventory:nodes/node/openflow:1/table/2/flow/248

Using below XML:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<flow xmlns="urn:opendaylight:flow:inventory">
<strict>false</strict>
<flow-name>FooXf248</flow-name>
<id>248</id>
<cookie_mask>255</cookie_mask>
<cookie>889</cookie>
<table_id>2</table_id>
<priority>8</priority>
<hard-timeout>1200</hard-timeout>
<idle-timeout>3400</idle-timeout>
<installHw>false</installHw>
<instructions>
<instruction>
<order>0</order>
<apply-actions>
<action>
<order>0</order>
<push-mpls-action>
<ethernet-type>34888</ethernet-type>
</push-mpls-action>
</action>
</apply-actions>
</instruction>
</instructions>
<match>
<ethernet-match>
<ethernet-type>
<type>2048</type>
</ethernet-type>
<ethernet-destination>
<address>20:14:29:01:19:61</address>
</ethernet-destination>
<ethernet-source>
<address>00:00:00:11:23:ae</address>
</ethernet-source>
</ethernet-match>
<ipv4-source>19.1.2.3/10</ipv4-source>
<ipv4-destination>172.168.5.6/18</ipv4-destination>
<ip-match>
<ip-protocol>17</ip-protocol>
<ip-dscp>8</ip-dscp>
<ip-ecn>3</ip-ecn>
</ip-match>
<udp-source-port>25364</udp-source-port>
<udp-destination-port>8080</udp-destination-port>
<in-port>0</in-port>
</match>
</flow>

Please let us know if you need more information.