[news.eclipse.modeling.gmf] Create Connection between two Nodes programm

[Kai Schulte <descipar@xxxxxxxxx>]

Hello all!
I guess this is really a newbie question, but sadly I can`t get it to 
work on my own. :(

I want to create a connection between to 2 Nodes which are created 
briefly before.
Node creation works fine, but i`m stuck with the connection part

My Code to create a Node looks like this:

CreationTool tool = new CreationTool(								 
GridConfigurationElementTypes.Building_2003);
CreateViewAndElementRequest req =
		(CreateViewAndElementRequest)tool.createCreateRequest();
CreateViewAndOptionallyElementCommand createCmd =
		new CeateViewAndOptionallyElementCommand(
		req.getViewAndElementDescriptor().getElementAdapter(),
		(GridConfigurationEditPart) selection.getFirstElement(),
		null, req.getViewAndElementDescriptor()
		.getPreferencesHint());
ICommandProxy cmdProxy = new ICommandProxy(createCmd);
cmdProxy.execute();

This is executed for nodes and then I tried to create a connection like 
this:

Command createCMD3 = CreateConnectionViewAndElementRequest
	.getCreateCommand(
	GridConfigurationElementTypes.BuildingSmartMeterRelation_4001,
	sourceEditPart, targetEditPart);		createCMD3.execute();

The part which I do not know, is how to get the sourceEditPart and 
targetEditPart.
I would guess it is fairly simple...

Hope someone can help me!

Thanks,
Kai