Hivemq-google-cloud-pubsub-extension

Hi
I am trying to get start with Google pub sub extension . While deployment I have updated the google-cloud-pubsub-configuration.xml file as suggested in documentation. While starting the service I am getting the message that pub sub extension started successfully . But while sending a message from publisher I am uable to get that in my pubsub.

This is the google-cloud-pubsub-configuration.xml file I am using for pub sub extension.

<?xml version="1.0" encoding="UTF-8" ?>

<pubsub-connections>
    <pubsub-connection>
        <id>connection01</id>
        <google-cloud-project-id>q-gcp-9501-iotcorereplac-22-07</google-cloud-project-id>
        <authentication>
            <service-account>
                <file-path>q-gcp-9501-iotcorereplac-22-07-8474c24f0b9e.json</file-path>
            </service-account>
        </authentication>
    </pubsub-connection>
</pubsub-connections>

<mqtt-to-pubsub-mappings>
    <mqtt-to-pubsub-mapping>
        <id>mapping-01</id>
        <pubsub-connection>connection01</pubsub-connection>
        <mqtt-topic-filters>
            <mqtt-topic-filter>topic/data</mqtt-topic-filter>
        </mqtt-topic-filters>
        <pubsub-topics>
            <pubsub-topic>
                <name>MCE</name>
            </pubsub-topic>
        </pubsub-topics>
    </mqtt-to-pubsub-mapping>
</mqtt-to-pubsub-mappings>

<pubsub-to-mqtt-mappings>
    <pubsub-to-mqtt-mapping>
        <id>mapping-02</id>
        <pubsub-connection>connection01</pubsub-connection>
        <mqtt-topics>
            <mqtt-topic>topic/return/data</mqtt-topic>
        </mqtt-topics>
        <pubsub-subscriptions>
            <pubsub-subscription>
                <name>MCE-sub</name>
            </pubsub-subscription>
        </pubsub-subscriptions>
    </pubsub-to-mqtt-mapping>
</pubsub-to-mqtt-mappings>

Please help in this regard