Update Mileage or sensor on Wialon_api Python

Hi,

I try to use Wialon_api on Python, I don't have any problem for login, to search account informations, unit et sensor informations.
But not possible, to update for example mileage counter. I tried this code, but I j have a WialonError (Access denied unit_update_mileage_counter (7))

I use this code:

        result = wialon_api.unit_update_mileage_counter(itemId=unitId, newValue=newValue)

Do you have a sample to update sensor and mileage ?

Regards