Use 3rd party JS libraries (including JQuery), call Javascript functions, access object properties and methods. Implement game objects, and algorithms in Javasc...
Ok, now I got this. This is not a bug. You're just using Aliases wrong.
You initialized alias "RectA" with javascript "" (empty string). It means that alias "RectA" refers to nothing. The alias name is just a string. There's no way for the plugin to know that you meant javascript object named "RectA".
So when you're later setting "RectA.left", you're actually setting "".left, which is just the global variable named "left". You also initialized alias "RectB" with an empty string. That's why RectB.left also means global variable named "left". Same variable. Actual javascript objects RectA, RectB and their properties stay unaltered.
Instead of
Init ["RectA"] with javascript ""
Init ["RectB"] with javascript ""
Set ["RectA"] to 666
You should do
Init ["RectA"] with javascript "RectA"
Init ["RectB"] with javascript "RectB"
Again. Init ["Alias"] with javascript "foo" means that the plugin will remember that wherever you're putting "Alias" when dealing with aliases, it actually means javascript object/variable/array foo. For example "Alias.left" means foo.left. "Alias[bar]" means foo[bar].
Ah okay. Thanks. It was a bit confusing.