Pass a varaible (Place holder) in the Long text of message class

Hi Gurus,

My requirement is to display an error messages using message class for better understanding I am using Long text will it possible to pass a variable (place holder) in the long text if possible means suggest how to pass the variable (we need to put any &1 like this similar we do in message class) or only we can display only text in long text.

Confirm the same

Regards

Dhanoo