Adding variables and storing in an array using xslt

[raghunandanbasf]

Hi Friends,
I am unable to add variables and store it in an array.

The Question is:

let us take an example:
Here we have a senerio like this
Loop on InvoiceLineItem/Tax

Extract values:
taxamt=//taxamount
taxtypecd=//taxtypecode
taxlocation=//taxlocation
taxrate=//taxrate
construct an tax_key = taxamt+taxtypecode+taxlocation+taxrate

form refarray[] for holding taxkeys

sort the refarray and loop on it
obtain taxcd from first taxcd and also extract taxamt,taxlocation
During loop sum up all the tax amounts of same taxtypecd and map totaltax amount for every unique taxcode and also for other tax elements extracted above to the tax[0]
This is the requirment
<xsl:for-each select="NonExempt">
<xsl:variablename="taxAmt"select="TaxAmount/MonetaryAmount/MonetaryValue"/>
<xsl:variable name="taxTypeCd" select="TaxTypeCode"/>
<xsl:variable name="taxlocation" select="$PLeft1"/>

<xsl:variable name="taxrate" select="TaxRate"/>
<xsl:variable name="taxcurrency" select="TaxAmount/MonetaryAmount/CurrencyCode"/>

<xsl:variable name="tax_key">
Inside taxkey I need to add all variable and store in it from here i have unable to proceed further

Kindly help me.
.

[jkmyoung]

Might be something like:
<xsl:value-of select="concat($taxAmt, '-', $taxTypeCD, '-', $taxlocation, '-', $taxRate, '-', $taxcurrency"/>

However, then you would simply have the result in a variable as opposed to output. Not sure how you want your array to be formatted.