@Hitesh_Chauhan, regarding @mitchell's comment, look at your second screenshot. You can set environmental variables there instead of in your command.
But there is something wrong with your Komodo configuration.
env should work fine. Check Edit menu > Preferences > Environment and make sure you have a PATH variable.
To summarize, you're trying to use our tool that runs commands on the commandline. When you ran the command it was not able to find the binary on your path.
env is on your system path by default on Windows so something is wrong with your system path.