Simple redirect rewrite

I have a site that is using the following url

https://propworks.abc.com/propworks

Now the default http to https redirect works

when HTTP_REQUEST {

HTTP::redirect https://[HTTP::host][HTTP::uri]

}

Now, they would like it if a user just types "propworks" in the browser it redirects to the https url above.

So I went and tried this and had no luck.

when HTTP_REQUEST {

if { [HTTP::host] eq "propworks" } {

HTTP::redirect "https://propworks.abc.com/propworks"

}

}

I then tried

when HTTP_REQUEST {

if {[HTTP::host] eq "propworks.abc.com"} {

HTTP::redirect "https://propworks.abc.com[HTTP::uri]"

}

}

That did nothing either...

any thoughts ? This reallly has me aggravated right now :)

Thanks

Shawn