# Renaming a local variable

1. Start editing the real-time application.
2. In the menu bar, click Program.
3. In the local variables table, double-click the text box Name of the local variable you want to rename.
4. Identifiers are case insensitive and must begin with a letter or underscore character. Multiple consecutive underscores or trailing underscores are not allowed.Rename the variable uniquely.
5. Press Enter.

1. The name of the variable is changed. All usages of the variable in Program Organisation Unit are automatically updated to the new name.