If the variable is created by the workflow, it won’t have a value in the document settings, since it is set by the workflow at run time. A variable manually created by right-clicking the variable pane (at the bottom of the workflow document) will persist between runs.

That just looks like none of the comparisons match. Note that the checkbox value wouldn’t be a list.

Changing the usage of result (in my example the 3 snakeOrShack lines after the "snake or shack" if statement) will get rid of the "variable result is not defined" error. For anything else you would need to ask a question.