I’ve added a way of setting the names of preset files. If you want to specify a unique name for your preset files, replace the populate("*.snaps") with the name of the new preset file, i.e., populate("myPresets.snaps"). Note that all combobox and filebutton widgets will need to use the same preset name.
combobox bounds(74, 190, 100, 25), populate("myFile.snaps")
filebutton bounds(12, 190, 60, 25), text("Save"), populate("myFile.snaps"), mode("snapshot")