Access Perl environment (shell) variables in Windows - $ENV not working

The issue

I found out how to use windows environment variables (e.g., %AppData%, %HomePath%, %SystemRoot%, etc.) in this SO post:

Getting the path of %AppData% in perl script

Here is the code snippet that was chosen as a working, correct answer:

 #!/usr/bin/perl

 use warnings;
 use strict;

 my $localConfPath = $ENV{localappdata};
 my $appdata = $ENV{appdata}; 

 print $localConfPath;  #will print the app path - C:\users\xxx\AppData\local
 print $appdata; #prints - C:\users\xxx\AppData\Roaming

However, this is not working on my machine in my code for some reason. My scripts work without the shebang (#!) line so I tried the script both with and without it, to no avail.

My set-up

I'm using the Perl that comes with GitBash, if that makes a difference.

What I've tried

I tried a simple Perl command line execution:

perl -e 'print %ENV{AppData}';

This didn't work. I also tried the following alternatives:

perl -e 'print %ENV{APPDATA}';
perl -e 'print %ENV{appdata}';

That also didn't work. Here's the error I get (the same for all 3 versions):

syntax error at -e line 1, near "%ENV{AppData"
Execution of -e aborted due to compilation errors.

I even tried to use the code from the SO post I mentioned in it's own file. That code doesn't work either. With the code from the post I get this error:

$ perl /c/Users/User1/Desktop/ehCode_testingWindowsEnvironmentVariables_01.pl
Use of uninitialized value in print at /c/Users/User1/Desktop/ehCode_testingWindowsEnvironmentVariables_01.pl line 7.
Use of uninitialized value in print at /c/Users/User1/Desktop/ehCode_testingWindowsEnvironmentVariables_01.pl line 8.

The lines in question then are these:

print $localConfPath;  #will print the app path - C:\users\xxx\AppData\local
print $appdata; #prints - C:\users\xxx\AppData\Roaming

I don't see why they shouldn't work.

I've checked Perl Monks, Perl Maven, Stack Overflow, and other popular Perl resources, to no avail. Even Active State did not have the answer.

When you access individual items of a hash, you need to use the scalar sigil, $ as opposed to the hash sigil, %:

perl -e 'print $ENV{APPDATA}'