if im understanding you correctly your just looking to have a situation where you have a actor that has a reference to each switch in your level (the ones that apply to the puzzle), and you want the actor to have what the switch state should be for the puzzle to be correct. if thats the case then the solution is pretty simple you just need to create a variable array of the type of your struct, then make the variable public (click the eye). this will allow you to edit the variable from the level editor and you can set references to the actors in the level. i made a little example below.
in the first picture you will see my door bp which is what the puzzle will be solving (get all the switches right and the door opens). first i made the struct which was two variables: switch actor reference and bool. then in the door bp i created a variable switchesInfo, made it array and public, and set its type to the struct (switchCheck). then i made a little script which checks the state of each switch and compares it to the correct state, if any dont match the correct state then the gate closes.
the second picture shows the details panel of the level editor with the door bp selected. here you can see the switches info variable we created and this is where you can populate the array. as you can see i created a index for each switch actor in my level and the index contains a reference to the switch and what the state should be. if you want to add another switch you just add another index.
the main idea here is that with a public variable you can easily reference actors in the level. i just noticed this is basically what is suggested in another post but o well.
