Icon and Alternate Icon on button

First of all – thanks a lot for this forum and site admins of MacScripter.net! And all good people here too :slight_smile: It’s my first topic here, thats why – Hi! and sorry for my stiil poor english.
We can use icon on button in ApleScript Studio. To indicate another state of button we can use alternate icon. But how in script we can to know which icon of button is used now – normal or alternate?