XSLT for ORU Messages

Question

My Input XML is like below:
<ORU>
<OBR></OBR>
<OBX></OBX>
<OBX></OBX>
<OBX></OBX>
<OBR></OBR>
<OBX></OBX>
<OBX></OBX>
<OBX></OBX>
<OBR></OBR>
<OBX></OBX>
<OBX></OBX>
<OBX></OBX>
</ORU>
Means, <OBR> is a parent & each has 3<OBX> child records. I have to loop through <OBR> & corresponding <OBX> to read the values.
I am using the code below. But only first<OBR> has child nodes that too all the <OBX> not 3. How to do?
<xsl:variable name="OBR" select="//*[local-name()='OBR_ObservationRequest' and namespace-uri()='']" />
      <xsl:for-each select="$OBR">
        <ns0:entity>
          <xsl:variable name="OBR_SetId" select="position()" />
<xsl:variable name="obx" select="//OBX_ObservationResult[preceding-sibling::OBR_ObservationRequest[1][position() = $OBR_SetId]]" />
          <xsl:if test="count($obx) &gt; 0">
<xsl:for-each select="$obx">
Regards,
Lakshmi
        

Answer 1

If I use the below code
<xsl:variable name="obx" select="//OBX_ObservationResult[preceding-sibling::OBR_ObservationRequest[1][position()
= $OBR_SetId]]" />
          <xsl:if test="count($obx) &gt; 0">
<xsl:for-each select="$obx">
</xsl:for-each>
I am getting the first <OBR> with all the <OBX> elements & other <OBR> doesn't have
any <OBX> nodes. But expected is each <OBR> should have corresponding <OBX> elements.