[SOLVED] How to constantly check checkboxes in GUI?

I tried to create a procedure "on player tick", that would check if certain checkboxes are flagged in gui, and if so, logic will change.

e.g. "is GUI exampleGUI currently opened for Event/target entity" -> "do is example checkbox checked" -> "do set logic firstcheckbox true" -> "else set logic firstcheckbox false"

But it doesn't work, because i don't have the guistate, which is a dependency.

Is there any way to replace this check or make it work? Thanks in advance