iRule error - Multiple redirect/respond invocations not allowed

Since the logic is somewhat related (redirect logic), why not merge the two iRules into something like:

when HTTP_REQUEST {
    switch [HTTP::uri] {
    "/Page1.php" {
     HTTP::respond 301 Location "http://www.abc.com/Page1.aspx" 
     } 

     "/Page2.php" { 
     HTTP::respond 301 Location "http://www.abc.com/Page2.aspx" 
     } 

     default { 
      if { ([HTTP::host] equals "abc.com" ) } {
         HTTP::respond 301 Location "http://www.abc.com[HTTP::uri]" 
        } 
     }
    }
}