How to get reference of debug target drop down

Hi,

I want to get reference of Debug Target drop down from vs 2013 toolbar.

I tried following code, but it always returns null.

CommandID idtofind = new CommandID(VSConstants.AppPackageDebugTargets.guidAppPackageDebugTargetCmdSet, (int)VSConstants.DebugTargetHandler.cmdidDebugTypeCombo);
                var obj = mcs.FindCommand(idtofind); //mcs is OLEMenuCommandService
                obj.ToString(); //obj is always null