MonoDevelop can't coding chinese characters!?

HI all:

Recently started using MonoDevelop as is my Script Editor, but the occurrence of the following questions:

I first use the system to provide:
Operating System: Mac OS 10.6.3
MonoDevelop Version 2.4

  1. I can not MonoDevelop editing Chinese, I want to comment the code in Chinese.

  2. I MonoDevelop in the interface language set to become the Chinese, although the normal function of the column, but below the editor face if it is garbled.

Last Will MonoDevelop has support C # syntax support, it does have a relatively counterparts on Javascript support it? Plug-ins or to use some syntax?

Please you have to use monodevelop of Unity developers can give me some solutions.

I would like to know this.

I Set the

Tools > Preferences > Visual Style > User Interface Language : chinese - Taiwan

And

Tools > Preferences > Text Editor > General > Font > Custom : Microsoft YaHei Normal

Code in the editing area is still garbled.