Redirect Based on IP

when HTTP_REQUEST { 
   if { [class match [string tolower [HTTP::uri]] eq uri_datagroup] and [class match [IP::client_addr] ne address_datagroup] } {
        HTTP::redirect "http://www.example.com" }
    }

yes its exact;y what i need . I understand the creation of the datagroups but can you clarify...can I use only your rule or do I need to use something else in conjunction with your rule?

when HTTP_REQUEST { 
   if { [matchclass [string tolower [HTTP::uri]] eq uri_datagroup] and [matchclass [IP::client_addr] ne address_datagroup] } {
        HTTP::redirect "http://www.example.com" }
    }

when HTTP_REQUEST { 
   if { [matchclass [string tolower [HTTP::uri]] eq uri_datagroup] and not ([matchclass [IP::client_addr] eq address_datagroup]) } {
        HTTP::redirect "http://www.example.com"
    }
}