Unable to set DEFAULT PHB value and Class Selector PHB single value for IP priority

[dks0692]

Version information
snappi-ixnetwork=0.8.1

Describe the bug
I am trying to set the PHB value to default value of 5 and Class selector single value of 4 as shown in the attachment, but when i execute the code , it sets them as Assured Forwarding vlaues

To Reproduce
Snippet
ipv4.priority.dscp.phb.values = [
ipv4.priority.dscp.phb.CS1,
]
ipv4.priority.dscp.phb.value = 4

    ipv4.priority.dscp.phb.values = [
        ipv4.priority.dscp.phb.DEFAULT,
    ]
    ipv4.priority.dscp.phb.value = 5

Expected behavior
As shown in the snapsots, the ones in green boxes are the expected behaviour, and the ones in the red boxes are the issue that i am observing
Additional context
Add any other context about the problem here.

[dks0692]