[xsl] update value of variable in for-each loop

Hi
I have a for-each loop 
inside for-each I try to test a variable:
//if statement
 <xsl:if test="$foo = 1">
 //do nothing

 
 
 The varibale definition:
        <xsl:variable name="foo"/>
                <xsl:variable name="foo">
                                        <xsl:for-each select="data">
                                                <xsl:choose>
                                                        <xsl:when 
test="contains(elements/elementA '1234)">

                                                                <xsl:value-of 
select="1"/>
                                                        </xsl:when>
                                                        <xsl:otherwise>
                                                                <xsl:value-of 
select="0"/>
                                                        </xsl:otherwise>
                                                </xsl:choose>
                                        </xsl:for-each>
                                </xsl:variable>
                                
                                
                                
Unfortunatelly the value of the varable foo is either 001 , 011,00011 and so 
one and the if statement works never correct  !
I even defined the varable as a xs:integer type or as below , but ever the 
value is never a 1  or  0

<xsl:variable name="foo"  select='1'"/>
                <xsl:variable name="foo">
                                        <xsl:for-each select="data">
                                                <xsl:choose>
                                                        <xsl:when 
test="contains(elements/elementA, '1234)">

                                                                <xsl:value-of 
select="'1'"/>
                                                        </xsl:when>
                                                        <xsl:otherwise>
                                                                <xsl:value-of 
select="'0'"/>
                                                        </xsl:otherwise>
                                                </xsl:choose>
                                        </xsl:for-each>
                                </xsl:variable>
                                
Brg
Henry

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