Embeded link on a notification email

I am setting up a business event to notify a controller about new vendor creations occurring in the system.  Everything works on the notification email except they want a link to click on to take them to the vendor record.  It takes them to the vendor record but doesn’t fill in the vendor acct_CD so it give them a blank vendor screen to create a new vendor.  Can anyone look at this html code and see why the vendor acct.cd is not be sent through the URL link?

<p class="richp"><a href="https://URL/Main?CompanyID=Test&ScreenId=AP303000&amp;AcctCD=((Vendor.acctCD))" target="_blank"><br>New Vendor</a></p><p class="richp"><br></p>

Thanks,