You can delete a variable by right-clicking its name and selecting Cut from the context menu.
Once you have selected a variable you can delete it by clicking on the icon on the main toolbar or by pressing Del.
If you have selected multiple variables, they will all be deleted.
If any rules’ condition or action parts refer to the variable you have removed, the references will be reverted back to their non-terminals. This will make those rules, and therefore the enclosing states and the scenario, unfinished.
icon on the main toolbar or by pressing Del.