master.xml

<data>
  <event-storage>
    <group id="event">
      <item id="International Bat Night - Bangers, Burgers &amp; Bats!">
        <item id="event-id">5632</item>
        <item id="adult-ticket">
          <item id="quantity-chosen">4</item>
          <item id="ticket-name">Adult Ticket</item>
          <item id="ticket-id">5630</item>
          <item id="ticket-price">20</item>
          <item id="total">80</item>
        </item>
        <item id="child-ticket-over-7s-only">
          <item id="quantity-chosen">2</item>
          <item id="ticket-name">Child ticket (over 7's only)</item>
          <item id="ticket-id">5631</item>
          <item id="ticket-price">8.50</item>
          <item id="total">17</item>
        </item>
      </item>
      <item id="Introduction to Bushcraft">
        <item id="event-id">5629</item>
        <item id="introduction-to-bushcraft">
          <item id="quantity-chosen">4</item>
          <item id="ticket-name">Introduction to Bushcraft</item>
          <item id="ticket-id">5628</item>
          <item id="ticket-price">80</item>
          <item id="total">320</item>
        </item>
      </item>
    </group>
  </event-storage>
</data>

master.xsl

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common" version="1.0" exclude-result-prefixes="exsl">

<xsl:output method="xml" indent="yes" />

<xsl:template match="data">
	<!--<xsl:apply-templates select="//data/event-storage/group/item/item[@id !='event-id']" mode="tickets"/>-->
  	<xsl:variable name="total">
  	<xsl:for-each select="//data/event-storage/group/item/item[@id !='event-id']">
          <xsl:call-template name="selects">
            <xsl:with-param name="num">1</xsl:with-param>
            <xsl:with-param name="count">
              <xsl:value-of select="item[@id ='quantity-chosen']"/>
            </xsl:with-param>
            <xsl:with-param name="eventid" select="../item[@id='event-id']"/>
          </xsl:call-template>
  	</xsl:for-each>
  	</xsl:variable>
  	<xsl:apply-templates select="exsl:node-set($total)" mode="ticket"/>
</xsl:template>


<!--<xsl:template match="//data/event-storage/group/item/item" mode="tickets">
  <xsl:variable name="group">
    <xsl:call-template name="selects">
      <xsl:with-param name="num">1</xsl:with-param>
      <xsl:with-param name="count">
        <xsl:value-of select="item[@id ='quantity-chosen']"/>
      </xsl:with-param>
    </xsl:call-template>
  </xsl:variable>
  
  <xsl:apply-templates select="exsl:node-set($group)" mode="ticket"/>
  
</xsl:template>  -->


<xsl:template name="selects">
  <xsl:param name="num"/>
  <xsl:param name="count"/>
  <xsl:param name="eventid"/>
    <xsl:if test="$num &lt;= $count">
      <xsl:call-template name="tickets">
        <xsl:with-param name="evid" select="$eventid"/>
      </xsl:call-template>
      <xsl:call-template name="selects">
        <xsl:with-param name="num">
          <xsl:value-of select="$num + 1"/>
        </xsl:with-param>
        <xsl:with-param name="count">
          <xsl:value-of select="$count"/>
        </xsl:with-param>
        <xsl:with-param name="eventid">
          <xsl:value-of select="$eventid"/>
        </xsl:with-param>
      </xsl:call-template>
    </xsl:if>
</xsl:template>

<xsl:template name="tickets">
  <xsl:param name="evid"/>
  <xsl:copy>
  <item id="evid"><xsl:value-of select="$evid"/></item>
  <item id="quantity-chosen"><xsl:value-of select="item[@id='quantity-chosen']"/></item>
  <item id="ticket-id"><xsl:value-of select="item[@id='ticket-id']"/></item>
  </xsl:copy>
</xsl:template>
  
<xsl:template match="item" mode="ticket">
 <div class="ticket">
    <input name="tickets-sold[fields][{position() -1 }][ticket]" type="hidden" value="{item[@id='ticket-id']}"/>
   <input name="tickets-sold[fields][{position() -1}][event]" type="hidden" value="{item[@id='evid']}"/>
    <input name="tickets-sold[fields][{position() -1}][quantity]" type="hidden" value="{item[@id='quantity-chosen']}"/>
  </div>
</xsl:template>


</xsl:stylesheet>