ESP32, Only one value per variable is published

Hello,

I am using ESP32 to publish a variable to ubidots, it works but only one value is showed. If I delete the varible and reset the ESP32, the variable is created automaticaly and the first value is showed again.

Any idea?

Thanks,

After a few test, I can confirm that my code is correct and sometimes my ESP32 is able to publishing properly.
I do not have problems with my internet conexion, I think the problem is with Ubidots broker.