Eks_managed_nodegroup instance distribution - SPOT and ON DEMAND %

Hi all,

It’s my first question here at terraform community , so sorry If there is something missing , Please comment and I would fix it.

Basically I am trying to create a eks_managed_nodegroup using Terraform Registry documentation.

I want to create a node_group which is configured to create a autoscaling group , having following options.

I have got an answer instance_market_options , but that allows me to create only spot instances. I want to create a managed node group with 50% SPOT instances and 50% On-Demand instances. Can anyone please help me on the same ?