Could some one do a video or share how they created the client name?

i don´t know how to get the client name could you please send a video of how to create it https://i.imgur.com/4qCv5Ho.jpg

from this video https://www.youtube.com/watch?v=N7QHv7vTw3E

Open the preview mode of the server container, click on the Variables tab, and there you should see the Client Name. Make sure you’ve enabled the Client Name variable before testing.
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