EMQX Bridge Configuration having on ca certificate file

I have to EMQX Brokers one locally installed and a second installed on cloud using the serverless deployment provided by EMQ.

My goal is to create a bridge on the local installation capable of connecting to the remote (cloud) one that will forward the messages from the local to the cloud EMQX broker. Apart from the straight forward setting (broker url, username, password etc.) I have to configure the ssl related properties however I do not know what I should configure. So far I set the bridge.mqtt.updates.ssl to on, and the bridge.mqtt.updates.cacertfile to point the file provided my EMQ deployment the rest bridge.mqtt.updates.certfile, bridge.mqtt.updates.keyfile are commend out as I do not have those files.

Can anyone help me on this as it does not work.