get enabled state of actionMans

Under help for ActionMans it states here under is checked: http://help.autodesk.com/view/3DSMAX/2016/ENU/?guid=__files_GUID_D33B403…
that:

.isChecked : boolean : Read
Contains the Checked state of the ActionItem as determined by its isChecked event handler.

Why does it not recognise any enabled button.

Say for instance you open up SME>Click a node>Hide unsed node.
So that enables the button. Surely when you run the code below it should be listed as enabled.

Thanks for any help with this. Perhaps a bug lies here. I'm using max 2016. OR do I have to somehow get the hwnd of the SME too?

clearlistener()

sme.open()

for i = 1 to actionMan.numActionTables-1 where (actionMan.getActionTable i).name == "SME" do
(
	atbl = actionMan.getActionTable i
	format "% ID:% Name:'%' ContextID:% ContextName:'%' NumActionItems:%\n" i atbl.id atbl.name atbl.contextID atbl.contextName atbl.numActionItems
	for j = 1 to atbl.numActionItems do
	(
		aitm = atbl.getActionItem j
		aitm.getDescription &desc
		chkd = aitm.isChecked
		aitm.getCategory &cat
		aitm.getButtonText &btn
		aitm.getMenuText &mnu
		hasicon = aitm.hasIcon()
		if hasicon then
		(
			aitm.getIconFileName &iconfile
			iconfile = filenamefrompath iconfile
			iconindex = aitm.getIconIndex()
			format "\t% ID:% Desc:'%' IsChecked:'%' Cat:'%' BtnTxt:'%' MnuTxt:'%' Icon:[%,%] \n" j aitm.id desc chkd cat btn mnu iconfile iconindex
			)
		else
		format "\t% ID:% Desc:'%' IsChecked:'%' Cat:'%' BtnTxt:'%' MnuTxt:'%'\n" j aitm.id desc chkd cat btn mnu
		)
	)