xslt keep multiple variables in scope depending on a single test -

i have many variables , 2 cases. original approach goes out of scope:

<xsl:choose>     <xsl:when test='$something = 6'>         <xsl:variable name="foo">x</xsl:variable>         <!-- 50 other variables -->     </xsl:when>     <xsl:when test='$something = 7'>         <xsl:variable name="foo">y</xsl:variable>         <!-- 50 other variables -->     </xsl:when> </xsl:choose> 

ie. later, saxon, xpst0008: variable x has not been declared (or declaration not in scope)

i think work if choose inside xsl:variable tag, tests repeated on , on , on , on , over:

<xsl:variable name="foo">     <xsl:choose>       <xsl:when test='$something = 6'>x</xsl:when>       <xsl:when test='$something = 7'>y</xsl:when>     </xsl:choose> </xsl:variable> <!-- 50 other variables, 2 tests repeated each... --> 

is there way keep variables in scope don't repeat myself?

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update 1

adding complete 'sscce' files on request

original approach:

<?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet  version="1.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform"> <xsl:template match="/">     <xsl:variable name="something">6</xsl:variable>     <xsl:choose>         <xsl:when test="$something = '6'">             <xsl:variable name="foo">x</xsl:variable>             <!-- 50 other variables -->         </xsl:when>         <xsl:when test="$something = '7'">             <xsl:variable name="foo">y</xsl:variable>             <!-- 50 other variables -->         </xsl:when>     </xsl:choose>     <xsl:value-of select="$foo"/> </xsl:template> </xsl:stylesheet> 

approach works forces repeat myself:

<?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet  version="1.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform"> <xsl:template match="/">     <xsl:variable name="something">6</xsl:variable>     <xsl:variable name="foo">         <xsl:choose>           <xsl:when test='$something = 6'>x</xsl:when>           <xsl:when test='$something = 7'>y</xsl:when>         </xsl:choose>     </xsl:variable>     <!-- 50 other variables, 2 tests repeated each... -->     <xsl:value-of select="$foo"/> </xsl:template> </xsl:stylesheet> 

example xml file: <xml/>. example saxon command-line: java -jar saxon9he.jar -s:in.xml -xsl:in.xsl -o:out.html

well, i'd rather process way :

<xsl:variable name="something">6</xsl:variable>  <xsl:variable name="var.set">   <xsl:choose>     <xsl:when test="$something = '6'">         <foo>x</foo>         <bar>xx</bar>         <!-- 50 other variables, inserted tag -->     </xsl:when>     <xsl:when test="$something = '7'">         <foo>y</foo>         <bar>yy</bar>         <!-- 50 other variables, inserted tag -->     </xsl:when>   </xsl:choose> </xsl:variable> 

the variable var.set nodeset able read exsl:node-set() extension.

for example retrieve value foo (stored node , not variable anymore), use like: <xsl:value-of select="exsl:node-set($var.set)/foo" />. handle single variable, quite if array of values.

ps: on root tag of stylesheet, not forget add exsl namespace declaration xmlns:exsl="http://exslt.org/common" extension-element-prefixes="exsl"