Select check box from check box list xsl umbraco - xslt

Question

I have a check box list with two check boxes. I want to output a link when either of them are checked. Both check boxes can be checked at the same time, or just one checked, or none at all.
I have a a variable named value where I am getting the dataType 2084 which is the check box list.
How can I target an individual check box within the list when it is checked. There preValues are 99 and 101.
Anyone who can help I am very much thankful!
Here is my attempt below.
<xsl:param name="currentPage"/>
<xsl:param name="parentNode" select="/macro/parentNode"/>
<xsl:template match="/">
<xsl:for-each select="$currentPage/OperationsMap[#id=$parentNode]/MarkerItem">
<xsl:variable name="value" select="umbraco.library:GetPreValues('2084')"/>
<div class="popup-box">
<xsl:if test="$value/preValue[#alias='99'] = '1'">
<div class="colorbox-link-container">
View current gallery
</div>
</xsl:if>
<xsl:if test="$value/preValue[#alias='101'] = '1'">
<div class="colorbox-link-container">
View historical project progress
</div>
</xsl:if>
</div>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>

Answer 1

GetPreValues returns a data set for the umbraco raw data type, not the status if they're checked or not on any particular content node.
Assumptions (as not specified in question):
Your data type is going to look something like the following:
<preValues>
<preValue id="99">Red</preValue>
<preValue id="100">Green</preValue>
<preValue id="101">Blue</preValue>
</preValues>
Not knowing the property alias you gave the checkbox list when adding the data type to the document type, I'm just going to use the following
MarkerItem/colours
Code:
This code was written on the fly, so haven't had time to test it.
<xsl:for-each select="$currentPage/OperationsMap[#id=$parentNode]/MarkerItem">
<div class="popup-box">
<!-- get the colours checked on MarkerItem -->
<xsl:variable name="colours" select="./colours"/>
<xsl:variable name="coloursValues" select="umbraco.library:Split($colours, ',')" />
<!-- cycle through each of the checked colours -->
<xsl:for-each select="$coloursValues/value">
<xsl:choose>
<xsl:when test=". = 'Red'">
<div class="colorbox-link-container">
View current gallery
</div>
</xsl:when>
<xsl:when test=". = 'Blue'">
<div class="colorbox-link-container">
View historical project progress
</div>
</xsl:when>
</xsl:choose>
</xsl:for-each>
</div>
Hopefully, that does the trick for you. Obviously, update any reference to colours and their value to what is specific to you.