This uses a global variable named ToggleStateValue to track the state of a toggle button. Since the variable and the toggle button are both set to false by default , you would only need to change the toggle button state if the saved value was true.
You always want to check if the group exists in storage. Otherwise, the variable would have the previous or default value which can cause unexpected things to happen. You can also invert the storage exists condition so it would trigger something if the storage didn’t exist.
If you were save a lot of data, it would be easier to save it as a structure. There should be a link to an example in one of the previous post.
All of the names much match perfectly including case. As mentioned in another recent post, you want to limit the frequency of saving and loading.