Fix datavisualization XYGraph initialization

Change-Id: I9df93dce9cecbdb889abdf48e778458a8131e52b
Signed-off-by: Sebastien Revol <sebastien.revol@cea.fr>
diff --git a/bundles/core/tools/visualization/org.eclipse.papyrus.moka.datavisualization.ui/src/org/eclipse/papyrus/moka/datavisualization/ui/GraphBuilderHelper.java b/bundles/core/tools/visualization/org.eclipse.papyrus.moka.datavisualization.ui/src/org/eclipse/papyrus/moka/datavisualization/ui/GraphBuilderHelper.java
index 3dbbce5..2a83b4e 100644
--- a/bundles/core/tools/visualization/org.eclipse.papyrus.moka.datavisualization.ui/src/org/eclipse/papyrus/moka/datavisualization/ui/GraphBuilderHelper.java
+++ b/bundles/core/tools/visualization/org.eclipse.papyrus.moka.datavisualization.ui/src/org/eclipse/papyrus/moka/datavisualization/ui/GraphBuilderHelper.java
@@ -90,7 +90,7 @@
 		}

 		

 		tDesc.setTraceColor(makeColor(colors[added % colors.length][0], colors[added % colors.length][1], colors[added % colors.length][2]));

-		tDesc.setTraceType(types[added / colors.length]);

+		tDesc.setTraceType(types[(added / colors.length)%types.length]);

 		

 		return tDesc;

 	}