Hi Brian,
Thank you for your answer.
I don't know if the shared variables worked, I don't use them to look at the data remotely, but since every variables in a WSN program are shared variables and that I didn't loose any data, I assume that they worked.
My gateway is connected to the network via a cellular modem, despite opening all the required ports, I never manage to make the distribute device manager to work. In fact, I can't even access the webUI.
Thank you
Mathieu