Appending the Last Web Page Visited to Custom Field in Marketo

Good morning!

I have a current ask to send the "last web page visited" of a lead in a weekly list to our sales team.  I have created a custom field for this URL to live, but I am a bit lost as to what I do from here.

I am guessing that I would have to use the CDV flow step to append the URL, but would I need to add in a program token,"my token", with an email script? And if so what would the velocity script be that I would add in. 

Any help would be great!