We create tag with name State:
Depending on the tag's value we want to make Rectangle object visible or not (instead of the Rectangle there can be other objects):
For example we want object is not visble if our (State) tag's value equal 0, and not visible if tag's value not equal 0. We need to enable Visibility property and fill it like this:
Click OK to confirm your changes and Run simulation to check your settings:
You can download this project here.