Hotspot/changed states trigger query

The big disadvantage of using a hotspot is that it doesn't have states. You can avoid that problem by using a shape with a solid fill set to 100% transparency.

A shape can have whatever states you want. If it has a Visited state, it will change to that state automatically when it is clicked. And it should remain in that state (unless a trigger changes it).

One disadvantage of using a shape instead of a hotspot is that there's no way to turn off the cursor change that indicates something is clickable. However, a workaround for that is to add some shapes to "wrong" areas. Those could show a "no, not this" message when clicked as way to provide feedback and guide the user to the correct areas. 

BTW, I suggest you give all interactive objects meaningful names. That makes it easier to program and to troubleshoot.