Accessing individual servers / nodes via a different port

when HTTP_REQUEST {
if { [TCP::local_port] eq "80"  } {
            persist cookie insert Test_Pool
pool TST_www.test.com-80
} else {
set srvr [findclass [TCP::local_port] $::TST_Individual_Servers " "]
        if { $srvr ne "" } {
           node $srvr 80
}  else {
          HTTP::redirect "http://search.tst.co.uk/"   
}   
  }
}
 

I cant seem to get this to work although the Individual_Servers is an address datagroup with the following values

Address Value

10.169.128.21%3 8001

10.169.128.22%3 8002

so essentially what i want is to go to:

http://search.tst.co.uk:8001 and go to node 10.169.128.21%3 and http://search.tst.co.uk:8002 and go to node 10.169.128.22%3

But when i go to the address with the port number i get a page can not be found the VS has port translation enabled and all ports enabled too.

could it be something with the datagroup config do i need to configure it as a string?

Pav