How to access/call SmartTags in custom Control (DesignMode)

So here the code snippet:

<pre lang="c#">
[Designer(typeof(TGraphDesigner))]
[ToolboxBitmap(typeof(TGraph))]
public class TGraph : TDiagramControl // UserControl
{
public TGraph()
: base()
{
//Init....
}

protected override void OnPaint(PaintEventArgs e)
{
...
}
}



[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
public class TGraphDesigner : System.Windows.Forms.Design.ControlDesigner
{
private DesignerActionListCollection actionLists;

// Use pull model to populate smart tag menu.
public override DesignerActionListCollection ActionLists
{
get
{
if (null == actionLists)
{
actionLists = new DesignerActionListCollection();
actionLists.Add(new TGraphActionList(this.Component));
}
return actionLists;
}
}
}
public class TGraphActionList : DesignerActionList
{
private TGraph customControl;

private DesignerActionUIService designerActionUISvc = null;

//The constructor associates the control with the smart tag list.
public TGraphActionList(IComponent component)
: base(component)
{
this.customControl = component as TGraph;

// Cache a reference to DesignerActionUIService, so the DesigneractionList can be refreshed.
this.designerActionUISvc = GetService(typeof(DesignerActionUIService)) as DesignerActionUIService;
}

// Helper method to retrieve control properties. Use of GetProperties enables undo and menu updates to work properly.
private PropertyDescriptor GetPropertyByName(String propName)
{
PropertyDescriptor prop;
prop = TypeDescriptor.GetProperties(customControl)[propName];
if (null == prop)
throw new ArgumentException("Matching ColorLabel property not found!", propName);
else
return prop;
}

// Properties that are targets of DesignerActionPropertyItem entries.
public Color BackColor
{
get
{
return customControl.BackColor;
}
set
{
GetPropertyByName("BackColor").SetValue(customControl, value);
}
}

public Color ForeColor
{
get
{
return customControl.ForeColor;
}
set
{
GetPropertyByName("ForeColor").SetValue(customControl, value);
}
}


//Implementation of this abstract method creates smart tag items, associates their targets, and collects into list.
public override DesignerActionItemCollection GetSortedActionItems()
{
DesignerActionItemCollection items = new DesignerActionItemCollection();

//Define static section header entries.
items.Add(new DesignerActionHeaderItem("Appearance"));

items.Add(new DesignerActionPropertyItem("BackColor",
"Back Color", "Appearance",
"Selects the background color."));
items.Add(new DesignerActionPropertyItem("ForeColor",
"Fore Color", "Appearance",
"Selects the foreground color."));
return items;
}
}










</pre>





Nothing happens. So I cannot access designer code while debugging design time...

I hope you can help me and give me a hint, what I missed.

thanks