How to mask the content page that redirect plus keep the header entered that entered by the user

The following irule does the following :

1 ) User enter the URL : http://www.supportourtroopscanada.com 2 ) Site redirect to http://www.canex.ca 3 ) Header in Address Bar stays as www.supportourcanada.com ( that what I want ) 4 ) Trying the mask the content of the page with any "www.canex.ca" to "www.supportourtroopscanada.com" which does not work.

Here is IRULE :

when HTTP_REQUEST {

Remove the Accept-Encoding header from requests so that the server does not compress responses

HTTP::header remove Accept-Encoding

 Disable the STREAM profile for request traffic
STREAM::disable

set static::host [HTTP::host]

HTTP::header replace Host "www.canex.ca"

}

when HTTP_RESPONSE {

 For any text-based response enable a STREAM mapping to replace specific values
 To use this, enable an empty STREAM profile to the virtual server
if { [HTTP::header Content-Type] contains "text" } {
    STREAM::expression {@www.supportourtroopscanada.com@www.canex.ca@}
    STREAM::enable
}

}

Please advise.