When you drag an object from the Object Library palette onto your form design, its default name is the name of the object followed by a number that represents the number of copies of the same object in the form design. For example, if you have two list box objects on your form design, the default names are ListBox1 and ListBox2. This naming is called the occurrence number.
Note:
If you plan to create calculations or scripts to enhance your form, avoid using the names of scripting properties, methods, and objects when naming your form objects. Using similar names can result in calculations and scripts not executing properly.

To name and rename objects