SVG It only works as an example. Created from scratch, it doesn't work

I am asking for help in passing messages from the sensor to the visualization using mqtt.
Below are photos of my trials.

With message, variable String, Number

Check your spelling.

msg.playload Vs

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Thank you for your help.
quote: "it is a big step for man, and a small one for mankind"
My mistake was made because I rewrote the hint without reflection.
There is one in the svg editor, the binding list.