sophos xg 330 monitoring over the web api

Hello Sophos Community,

I have 2 Sophos XG 330 in High Availability Mode. All is working well.

Now I want to monitor the HA Status of the firewalls. I have imported the Sophos SNMP Mibs into nagios but I'm not really seeing any MIBS for the HA Status.

Now I'm trying now to get the status over the API per powershell, but when I make a reques like this

<request>

<get>

<ha></ha>

</get>

</request>

I do net get any values.

I can get the interfaces with the <interface></interface>  parameter instead of <ha></ha> , so the API connect is working in general.

Wo what is the best method to monitor the HA status of the xg330.

I want to get the status, which I can see over the sophos webinterface unter "system services" : e.g. HA status: established so that I get informed when the sophos HA status changes (e.g. that primary node is not evailable and the auxilary node becomes the primary one)

Does somebode have experience with the monitoring of the high availability status of the sophos xg 330?

I have enabled already the mail notification but I want to additinioal integrate the sophos monitoing into our nagios monitoring system.

Thanks for you answers in advance