webbrowser ( Referer ) HOW TO

this is working

wb.Navigate url:="http://yah-underworld.com/index.php" _
, headers:="Referer: www.website.nl" & Chr$(13) & Chr$(10)

how do i add another line to it like this

wb.Navigate url:="http://yah-underworld.com/index.php" _
, headers:="Referer: www.website.nl" & Chr$(13) & Chr$(10) _
, headers:="useragent: www.website.nl" & Chr$(13) & Chr$(10) <<<<<<<<gives error