How to do a code table lookup in XSLT 1.0 - xslt-1.0

Question

How can I do a lookup from a code table in XSLT version 1.0?
I tried to do something like this example: https://www.xml.com/pub/a/2002/02/06/key-lookups.html, but I think in that case the data was in the input file and not in the XSLT itself.
I created a namespace called "lookup" and tried the following, where my lookup table in the XSLT code itself, but I always get empty values. Do I need to move this to an apply-template structure?
<lookup:TenderActionType>
<string id='00'>Add</string>
<string id='01'>Cancel</string>
<string id='04'>Update</string>
<string id='05'>Update</string>
<string id='56'>Cancel</string>
<string id='06'>Add</string>
<string id='46'>Cancel</string>
</lookup:TenderActionType>
<xsl:key name='tenderActionType' match='string' use='#id' />
<!-- I tried this as well -->
<xsl:key name='tenderActionType2' match='lookup:TenderActionTypestring' use='#id' />
Code below is in a working for an EDI file converted to XML with Microsoft BizTalk.
<ChangeStatus>
<xsl:value-of select="key('tenderActionType', s0:B2A/B2A01/text())" />
</ChangeStatus>
<ChangeStatusTest>
<xsl:value-of select="key('tenderActionType', '04')"/>
</ChangeStatusTest>

Answer 1

Based on this post, I got it working. Also referenced post to pass the parameter correctly.
As I was using Microsoft, I had to change exsl to msxsl.
I dropped the idea of using the key.
<xsl:variable name="LookupTenderActionType">
<string id='00'>Add</string>
<string id='01'>Cancel</string>
<string id='04'>Update</string>
<string id='05'>Update</string>
<string id='56'>Cancel</string>
<string id='06'>Add</string>
<string id='46'>Cancel</string>
</xsl:variable>
<xsl:variable name="lookupSet" select="msxsl:node-set($LookupTenderActionType)" />
I was testing both with a literal and an XPATH value, until I knew my XPATH was correct:
<Process>
<ChangeStatus>
<xsl:call-template name="PerformLookupTenderActionType">
<xsl:with-param name="lookupNumericCode" select="s0:B2A/B2A01/text()"/>
</xsl:call-template>
</ChangeStatus>
<ChangeStatusTest>
<xsl:call-template name="PerformLookupTenderActionType">
<xsl:with-param name="lookupNumericCode" select="04"/>
</xsl:call-template>
</ChangeStatusTest>
The template acts as the lookup subroutine/function:
<xsl:template name="PerformLookupTenderActionType">
<xsl:param name="lookupNumericCode"/>
<xsl:value-of select="$lookupSet/string[#id = $lookupNumericCode]"/>
</xsl:template>
Got my desired result in XML output (converted code of 04 to "Update"):
ChangeStatus>Update</ChangeStatus>