unable to populate the value using XSLT mapping

HI Experts,

I am working on idoc to file scenario...

From idoc i amusing to populate E1EDP01 segment values at item level of target structure except one field. The one field which i have to populate from some other segment. But the item note is matched to E1EDP01 segment.

<xsl:template match="E1EDP01">

  <ReturnOrderItem>

   <ItemNr>

    <xsl:value-of select="E1EDP02[QUALF=001]/ZEILE"/>

   </ItemNr>

   <ReturnDate>

    <xsl:value-of select="Z1EDP01_SIMS/LFDAT"/>

   </ReturnDate>

   <Status>

    <xsl:value-of select="Z1EDP01_SIMS/STATUS"/>

   </Status>

   <ReturnReason>

    <xsl:value-of select="E1EDPT1[TDID=ZI04]/E1EDPT2[1]/TDLINE"/>

   </ReturnReason>

   <TrackingNr>

    <xsl:value-of select="Z1EDP01_SIMS/BOLNR"/>

   </TrackingNr>

   <BankAccountNr>

<xsl:value-of select="E1EDKT1/E1EDKT2[1]/TDLINE"/>(Here i want to populate the value)

   </BankAccountNr>

   <SerialNrType>

    <xsl:value-of select="Z1EDP01_SIMS/ZSERTYP"/>

   </SerialNrType>

   <SerialNumbers>

    <SerialNr>

    <xsl:value-of select="Z1EDP01_SIMS/Z1SERIAL/SERIALNO"/>

    </SerialNr>

   </SerialNumbers>

  </ReturnOrderItem>

</xsl:template>

How can i populate the value for this case.

Please help me on this.

Regards,

Uday.