How to send syslog text to telegram from The Dude?

Question

Mikrotik

In continuation of solving the problem How to monitor a text file using The Dude?
I set up Nxlog - it reads the text log of the program and sends it to Mikrotik via the syslog protocol.
On Mikrotike in The Dude, I created a syslog rule - "having found a certain text in the log line - send a message to Telegram". Everything works, messages in Telegram come... The
question is how to transfer the contents of the received log line in a Telegram message?
There are only variables for devices and their states, but not for syslog.