Ardunity not running with .Net 4.6

[vplinf...@gmail.com]

I am working on a project which uses Unity ML Agent (Machine Learning) Tensorflow sharp.  It needs the Scripting Run time Version to be Experimental .Net 4.6 Equivalent..   But setting those in Player setting, Ardunity causes problem as it needs  .Net 2 Subset.... 

Can you help ?  Thanks in advance...