I have received the reply from or HQ about this query of yours:
There's is no option to select custom data that could be sent to the Azure IoT hub, especially when there's no default parameter for the input counter.
The idea could be using MQTT forward data to Azure by requesting data from the device itself using MQTT, but once again no option to input counter.
For such feature, additional development would be required.
If the customer planning development feature himself, SDK could be used. Additionally, there's the option to download the Azure package from the wiki, which customers then try to modify according to its needs.
For the commands, the standard would be the "azure_iothub" SSH command, but customers can use the command "find / -name "*azure*" to see all scripts and configuration files related to the Azure IoT hub feature.
To sum all things up we need to request additional research and development for this feature where the customer must contact his/her sales account manager to proceed with the request.
But if you are willing to do it on your own the SDK file is available at this link: GPL - Teltonika Networks Wiki (teltonika-networks.com)
Only that customizations and revisions on the SDK, the client will be responsible and we cannot provide further support.
Thank you and have a nice day!