XSL on Multibyte Platform

I have a problem with an XSL on the Chinese platform.  I have added Chinese 
characters in the variable definition in the Stylesheet. 

<xsl:variable name="RetroModificationActivityTaskCategory">
Retrofit Change Activity <Chinese characters>
</xsl:variable>

Is it okay to use non English characters in the XSL file??

Regards.
Saurabh



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