Nginx Plus LB as backend node member on F5 LTM

We have requirement for traffic load balancing  as mentioned in below scenario.

Main URL is configured on L5 LTM VIP , 80% traffic should go on Azure VM node , 20% should go on AKS via NGINX plus load balancer 

F5 LTM VIP -  abc.com  - 10.10.10.10

Pool member:

Node 1 - Azure VM - 10.10.20.5

Node 2 - Nginx Plus virtual server - abcaks.com - 10.10.30.5