how to change the name of QListWidgetItem in designer

Hello friends,
I build a design having four QListWidget and individually i want to rename its QListWidgetItem name to identify the difference between the listwidgets and in designer i cant find the QListWidgetitem object name property in the designer .. so i cant use signals without that in program ..

What do you mean? QListWidgetItem does not have object name nor signals. It is not a QObject.