Find slide number where an object is located

Hi,

assume we have an object, named "blue_clickbox". This object is shown "For Rest of Slide" (and not "For Rest of Project").

Question: Is there a system variable which indicates on which slide the object "blue_clickbox" can be found? Or some JavaScript method to find the slide number of "blue_clickbox"?

I need it for a general JS program code where I cannot just use the fixed slide number in some specific situation.

I`m using Captivate 9 (most recent version) and publish in HTML5. Thank you very much in advance for any help!