GURUX.python push listener

Hello,

I am trying to send data from the meter to the host using python library and need help.

I have added the pushObjectList, destination, and communicationWindow and wrote it to the Push Setup object at 0.0.25.9.0.255.

obj.destination = "xx.xx.xx.xx:4059"
obj.communicationWindow = [(start, end)]
and the pushObjectList by assigning it to a list I retrieved from another register (Billing register)

Now I have two inquiries:

1- I have a terminal running for the Gurux.DLMS.Push.Listener.Example.python using
python -u "main.py" -p 4059 -i WRAPPER -r ln
No data is being sent, so I am a bit lost now on what to do next to receive the pushObjectList data.

2- I need to set the data to be sent periodically (for example each 15 minutes) instead of setting a start and end interval

I really appreciate your help, thank you so much.