Loading an existing form, from a string made into a link

[Carina]

Hello,

So I have a button that sends automatic emails to a user. In that email, there is a link :
Dim link as string = "<a href=http://" & hostname........"
 this is included in the body:

Mail.Body= "CLick on the link below to open form ###" & link & vbCrLf"

and this does send the link, but opens up the form blank, although the id of the form is listed on the URL. What am I missing so it can load the form with the existing data?

[Carina]

Nevermind, forgot to use a "?" on the URL. its fixed