UDP communication issue

I’m trying to setup UDP communication with hardware sensor. I send request (string “run!”) -this part works. I need to get the answer to the same port - this part doesn’t work. I got an error.

Probably, I can’t send from and listen to the same port…
That’s the other issue: How to specify local port with UDP client node. Every time I restart vvvv I got new one picked up randomly.
Hardware is 100% working. I have UDP client sample and it’s working, so this is vvvv side issue. I test it with Wireshark also. Hardware responds to request from vvvv, i just can hear it with my patch.

What I’m doing wrong?
Thanks in advance!

The port on the right has to be set to “5000”

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