Autounattended.xml - Windows 2016 - Forced to Select OS

Hi

I've got previous experience automating windows installs before (desktop and server) but I'm stumped with this one issue with 2016.  

I can't seem to automate the OS selection window, This one...

< not able to upload images but its the OS selection windows within the windows setup >

Here is my code snippet from my Autounattended.xml 

I've tried using /image/name & /image/index

I used dism to confirm the image name

my iso is 

SW_DVD9_Win_Svr_STD_Core_and_DataCtr_Core_2016_64Bit_English_-3_MLF_X21-30350.ISO

SHA256          36B60C31CAFA2D488FE5D842D1FFBA623381F5E9F70E9359B3AA05282C9D232D

Anyone else seem this or can offer a share of what you use in your unattended file?

Thanks

Gary