macos - How to use the defaults command to resize bluestacks?

I'm trying to resize the bluestacks window using the command below. I'm trying to change it to 1200x800.

defaults write com.bluestacks.BlueStacks "NSWindow Frame browserWindow" "-48 -22 1200 800 0 0 1200 800 "

Seems that the command works:

defaults read com.bluestacks.BlueStacks
{
    "NSWindow Frame browserWindow" = "-48 -22 1200 800 0 0 1200 800 ";
}

But when I open bluestacks it doesn't have the new size and the settings have been overwritten.

defaults read com.bluestacks.BlueStacks
{
    "NSWindow Frame browserWindow" = "-48 -22 1536 899 0 0 1440 877 ";
}

macOS Sierra 10.12.6