Python SDK add zone to interface

[hsawiris]

I am new to Python coding and I was trying to add an interface to zone. Here is my code but it generates error. TIA

from panos.firewall import Firewall
from panos.network import EthernetInterface

fw = Firewall("192.168.47.151", "admin", "Rummenigge@11")

ethernet1_1 = EthernetInterface(
name="ethernet1/1",
comment="test",
mode="layer3",
zone="TRUST"
)
fw.add(ethernet1_1)

ethernet1_1.apply()

ethernet1_2 = EthernetInterface(
name="ethernet1/2",
comment="test",
mode="layer3",
zone="UNTRUST"
)
fw.add(ethernet1_2)

ethernet1_2.apply()
fw.commit()

Error:

Traceback (most recent call last):
File "/network-programmability/SCRIPTS/Python/PA add interface.py", line 7, in
ethernet1_1 = EthernetInterface(
File "/home/hany/.local/lib/python3.10/site-packages/panos/base.py", line 3321, in init
super(VsysOperations, self).init(*args, **kwargs)
File "/home/hany/.local/lib/python3.10/site-packages/panos/base.py", line 2468, in init
raise ValueError('No param "{0}" exists'.format(name))
ValueError: No param "zone" exists