Change ComboBox Text of Installer Language DialogBox

I defined two languages for my installation.
English
SimpChinese

I want to change the text ("Chinese(Simplified)") in ComboBox of language dialog box to my native language("ä¸_文（简体）").

How to change that?

Thanks for help!!!!!!!!!!!!!!!

Before I asked the question,I tried to do that.But failed.
Where should I put the code?

Make sure you're using the latest version of NSIS first. This didn't work from 2.29 to 2.33.

Originally posted by kichik

!define LANG_SIMPCHINESE_NAME "something"

It should be

!define LANGFILE_SIMPCHINESE_NAME "something"

By the way,How to set English is the default language to show in the editbox of ComboBox?

Set $LANGUAGE to ${LANG_ENGLISH} in .onInit before you display the dialog selection menu.