Need to log the VPN Pool IP Address on the Edge Firewall Logs

Dears 

Greeting 

I am Using the F5 APM as a VPN Solution 

On the Edge Firewall Logs i can see ONLY the SELF IP Addresses and NOT the the Assigned VPN Pool IP Address that is configured under the Network Access Profile on the APM Config,

I am Using a One Arm Deployment 

When i am try to remove the SNAT from the Virtual Server , and Network Access Profile on the APM interchangeably and with each other , I cannot reach the services