Get-KBDownloadurl script issue with url value

[chilleregeravi]

$KBArticleObject | 
        ForEach-Object {
            $kb = $_
            #In older months, there won't be a subtype. Handle this so there are not empty ()'s
            if($kb.SubType){
                $HTML_TO_RETURN += $('<a href="{0}" >{1} ({2})' -f $kb.URL, $kb.ID, $kb.SubType)
            } else {
                $HTML_TO_RETURN += $('<a href="{0}" >{1}' -f $kb.URL, $kb.ID)
            }

This script under Process takes data from Get-MSrcCVRFAffectedSoftware, where $KB = $_ .However there does not exist a $KB.subtype, as $KB is a sub object under Get-MsrcCVRFAffectedSoftware output object.

Example of one output object of Get-MsrcCVRFAffectedSoftware

FullProductName : Windows Server 2008 for x64-based Systems Service Pack 2
KBArticle : @{ID=4131188; URL=https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4131188; SubType=Security Update}
CVE : CVE-2018-8120
Severity : Important
Impact : Elevation of Privilege
RestartRequired : Yes
Supercedence : 4093224
CvssScoreSet : @{base=7.00; temporal=6.30; vector=CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C}

Hence the line $KB = $_ should actually be $kb = $_.KBArticle