Multiple http_request iRules not working Same Virtual server

i add below but its not working as expected , web page not loading 

when HTTP_REQUEST {
if { [class match [HTTP::header values "True-Client-IP"] eq mo-client-ip] } {
HTTP::respond 400 content "site currently unavailable, Please try again later"
} elseif { [class match [HTTP::host] eq mo-domain] } {
HTTP::respond 301 Location "https://www.[HTTP::host][HTTP::uri]" "Connection" "Close"
return
}
}