Run command in windows vm in azure using python sdk

Question

I'm able to execute the run command using python for Linux Azure VM's as mention in this link

For Windows, it works for a basic print out such below.

run_command_parameters = {
    'command_id': 'RunPowerShellScript',
    'script': [
        '$arg1 = "hello world"',
        'echo $arg1'
    ]
}

However, I'm not able to pass parameters. Anyone experienced this and know a solution?

run_command_parameters = {
    'command_id': 'RunPowerShellScript',
    'script': [
        'echo $arg1'
    ],
    'parameters':[
        {'name':"arg1", 'value':"hello world"}
    ]
}