# Creating a variable in the data storage

1. Start editing the real-time application.
2. In the menu bar, click Program.
3. In the Explorer, click Data storage (DS).
4. A dialogue box is opened.
5. Enter a unique variable name.
6. In the drop-down list, choose the data type.
7. Click Add.
8. The variable is added to the variable list.
9. Click Apply.

You can create a maximum of 512 variables in the data storage.