help!!!! with a question about web redirect

I recommend that you read this recipe:

• iRule Recipe 1: Single URL Explicit Redirect

It covers your exact use-case. However, in brief:

when HTTP_REQUEST {
    if { [string tolower [HTTP::host]] eq "company.com" } {
        HTTP::respond 301 Location "http://www.company.com[HTTP::uri]"
    }
}

if { [http::host] starts with "company.com" }{ redirect " }

thank you bro .i resolve the problem with a similar method . regards!