[xsl] treat a string into a variable name

["Pouliot, Brian R." <brpouliot at tasc dot com>]

I have some variables: $day1date, $day2date.....$day7date.  I have a
template that takes an integer argument "$n" and creates the correct
variable name.  I store the variable name like this:

<xsl:variable name="temp">$day<xsl:value-of select="$n"/>date</xsl:variable>

Now, I need to use $temp to access the actual variables.  Is this possible?
I'm having a terrible time with it!  $temp == "$day1date".  How do get the
value of the variable named by the string inside $temp?

Thanks,

Brian

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