Information message after form submit

it will be great if the user see a message (pop up or show div)

containing a success message or error on form submission error from server side.

It is already possible to show a div when the form is successfully submitted, using dynamic attributes > show/hide.

but thats not server side right?

What exactly do you mean?

i mean show the message when there is no errors form the server using server connect.

the form may submit but the record is not inserted in the database for example.