How to modify the message "Item added successfully" on the "Nintex Form Web Part"

Some users that use the International version of Nintex forms, use to show the designed form on the Nintex Form Web Part.

On those cases when a user saves a form, they see the following message: "Item added succesfully" , that is not a message in their language.

Here is a workaround so as to change that message:

Add the next sentece on the Form settings, custom Javascript section.

NWF$("span:contains('Item added successfully')").html('Vare tilføjet med succes');