Well let me start by saying this is a mess mainly because I have no idea of
what I'm doing.  After researching this problem I've realized that my style
sheet could definitely be formatted better.  However I'm just trying to update
a baseline version so I didn't want to rewrite the whole thing (little did I
know that I would almost anyway).

I apologize for including so much entire style sheet below, which I know is
bad form having combed the lists for an answer and seeing all the tiny
examples, but most of the time I can't seem to comprehend the answers when
only a snippet of code is used.

What I am trying to do is total the ORDD_TLNA for the base years when
//AwardFullData/AwardItemizedLine[count(./periodLinePeriodNumber)<1] and
then later total ORDD_TLNA for the option years when
//AwardFullData/AwardItemizedLine[count(./periodLinePeriodNumber)>0]">

I have tried so many iterations I have forgotten them all but I think the
closest I have gotten is this:

<xsl:variable name="TEST"
select="//AwardFullData/AwardItemizedLine[count(./periodLinePeriodNumber)&lt;
1]"/>
<xsl:variable name="ADDME"
select="//AwardFullData/AwardItemizedLine/transactionAmount"/>
...

<xsl:value-of select="sum($ADDME[$TEST])"/>
The result was NaN (also at one point I checked for only numerical values
before sum and received 0)


Not even sure if the above was correct I tried to strip the formatting of the
data which includes $ and , (I have no control over the data source).
<xsl:value-of select="sum((translate($ADDME,'$,',''))[$TEST])"/>


THANKS!! Any help would be greatly appreciated I've been looking at the same
problem for 2 days.



Style sheet
..................................                   
                    
                     <!--Base Year-->
                           <xsl:for-each
select="//AwardFullData/AwardItemizedLine[count(./periodLinePeriodNumber)&lt;
1]">
                           <xsl:variable name="LNUM" select="./lineNumber"/>
                           <xsl:variable name="SLNUM"
select="./subLineNumber"/>
                           <xsl:variable name="CMDT_NM"
select="./commodityName"/>
                           <xsl:variable name="QTY_ORIG"
select="./originalQuantity"/>
                           <xsl:variable name="QTY_INCR"
select="./incrementQuantity"/>
                           <xsl:variable name="QTY_TOTAL"
select="./quantity"/>
                           <xsl:variable name="UNIT_OF_MESR"
select="./unitOfMeasure"/>
                           <xsl:variable name="UNPR_TA_CH"
select="./precreditUnitPriceTransactionAmount"/>
                           <xsl:variable name="UNPR_INCT_TA_CH"
select="./precreditUnitPriceIncrementTransactionAmount"/>
                           <xsl:variable name="UNPR_ORIG_TA_CH"
select="./originalPrecreditUnitPriceTransactionAmount"/>
                           <xsl:variable name="ORDD_TLNA"
select="./transactionAmount"/>
                           <xsl:variable name="ORDD_INCT_TLNA"
select="./incrementTransactionAmount"/>
                           <xsl:variable name="ORDD_ORIG_TLNA"
select="./originalTransactionAmount"/>                     
                           <xsl:variable name="DLVR_DT_CH"
select="./deliveryDate"/>
                           <xsl:variable name="PERD_PERF_STDT_CH"
select="./periodPerformanceStartDate"/>
                           <xsl:variable name="PERD_PERF_ENDT_CH"
select="./periodPerformanceEndDate"/>
                           <xsl:variable name="DSCR" select="./description"/>
                           <xsl:variable name="EXT_DSCR"
select="./extendedDescription"/>
                           <xsl:variable name="REF_DOC_TYPE"
select="./referenceDocumentType"/>
                           <xsl:variable name="REF_DOC_NUM"
select="./referenceDocumentNumber"/>
                           <xsl:variable name="REF_LINE_NUM"
select="./referenceLineNumber"/>
                           <xsl:variable name="CONTRACT_NUM"
select="./contractNumber"/>
                           <xsl:variable name="LINE_STATUS"
select="./objectChangeStatus"/>
                           <xsl:variable name="CLIN"
select="./contractLineItemNumber"/>
                           <xsl:variable name="PERD_LINE_PERD_NUM"
select="./periodLinePeriodNumber"/>
                                                     
                           <fo:table line-height="0.3in"
border-collapse="collapse" table-layout="fixed">
                                  <?ShowGrid true?>
                                  <?ShowHeaderGrid true?>
                                  <fo:table-column column-number="1"
column-width="47px"/>
                                  <fo:table-column column-number="2"
column-width="180px"/>
                                  <fo:table-column column-number="3"
column-width="80px"/>
                                  <fo:table-column column-number="4"
column-width="51px"/>
                                  <fo:table-column column-number="5"
column-width="88px"/>
                                  <fo:table-column column-number="6"
column-width="93px"/>
                                  <fo:table-header text-align="center">
                                         <fo:table-row>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-family="Helvetica" font-weight="bold"
font-size="8pt">Number</fo:block>
                                                </fo:table-cell>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-weight="bold">Commodity Name or Service</fo:block>
                                                </fo:table-cell>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-weight="bold">Quantity</fo:block>
                                                </fo:table-cell>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-weight="bold">Unit of Issue</fo:block>
                                                </fo:table-cell>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-weight="bold">Unit Price</fo:block>
                                                </fo:table-cell>
                                                <fo:table-cell
border-style="solid">
                                                       <fo:block
text-align="center" font-weight="bold">Total Cost ( Inc. disc and
tax)</fo:block>
                                                </fo:table-cell>
                                         </fo:table-row>
                                  </fo:table-header>
                                  <fo:table-body>
...................
                                  <xsl:if test="$PRINT_CHANGE_AMOUNTS">
                                         <fo:block>Original Total: 
<xsl:value-of select="./originalPrecreditLineTransactionAmount"/>
                                         </fo:block>
                                         <fo:block>Change Total: 
<xsl:value-of select="$ORDD_INCT_TLNA"/>
                                         </fo:block>
                                  </xsl:if>
                                  <fo:block>Total:  <xsl:value-of
select="$ORDD_TLNA"/>
                                  </fo:block>
                                  <fo:block white-space-collapse="false"
font-family="Helvetica" font-size="9pt">
                                         <xsl:value-of select="' '"/>
                                  </fo:block>
                           </xsl:for-each>
                     </xsl:for-each>
                    
                    
                     <!--BASE YEAR TOTAL-->
                          
                     <fo:block white-space-collapse="false"
border-bottom-style="solid" font-size="9pt">
                    
                     </fo:block>  
                     <fo:block font-weight="bold" font-size="9pt">
                           <fo:inline>BASE YEAR TOTAL:  </fo:inline>
                     </fo:block>
                     <fo:block white-space-collapse="false"
border-bottom-style="solid" font-size="9pt">
                           <xsl:value-of select="' '"/>
                     </fo:block>  
                    
                                             
                    
                     <!--FOOTER-->
                    
                     <fo:block font-weight="bold" font-size="9pt">
                           <xsl:value-of select="$FOOTER"/>
                     </fo:block>
                     <fo:block white-space-collapse="false"
border-bottom-style="solid" font-size="9pt">
                           <xsl:value-of select="' '"/>
                     </fo:block>
              </fo:flow>
       </fo:page-sequence>
</fo:root>