ros2genmsg not working or is there an alternative to sourcing ROS2 custom msgs

OS: Windows 10:

Python: version 3.7 installed from window's store installer

Been all day trying to get ros2genmsg function working. I have

-pyenv to the appropriate python3.7 exe

-pointed to cmake version 3.1 or higher

-installed visual studio and did a mex c++ command in matlab to select the VS2019 compiler.

After all that I still get errors when running rosgenmsg on a simple Test.msg. I feel like I have tried everything to get this working. Is there a way to source interfaces before opening MATLAB. For example, I have tried opening matlab from a terminal with ROS and said custom interface sourced. But this still does not import the custom interface. Is there a workaround to not having to call rosgenmsg.

Log file attached and quick image of error shown below.

[鑫 王]

hi ,do you deal this question sucessful? After update matlab 2022b i have a same question