to access a particular token in a comma separated stri

How can I access a particular token in a comma separated string by specifying a numerical value for the token number using XSL?

Assuming, my xsl:variable or xsl:parameter holds a string with comma-separated values as shown below:

<xsl:variable name="ValuesString" select="'10,20,30,40,50'"/>

How would I go about finding a way to pick out the value specified by a count that maps another variable/parameter.

Open to Ideas :)
Thanks,

Abhishek?
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Abhishek Sanwal
HP - Houston Campus

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list