diff --git a/src/org/ntlab/deltaViewer/DeltaAnimation.java b/src/org/ntlab/deltaViewer/DeltaAnimation.java
index b4c4fc9..a3ac999 100644
--- a/src/org/ntlab/deltaViewer/DeltaAnimation.java
+++ b/src/org/ntlab/deltaViewer/DeltaAnimation.java
@@ -306,6 +306,7 @@
 		// Add a vertex to the graph in a transactional fashion. The vertex is actually a 'cell' in jgraphx terminology.
 		mxgraph.getModel().beginUpdate();
 		try {
+			System.out.println(sourceCell);
 			curPoint.setX(sourceCell.getGeometry().getX());
 			curPoint.setY(sourceCell.getGeometry().getY());
 			sourceCell.getGeometry().setX(curPoint.getX() + updatePoint.getX());