diff --git a/src/de/tud/kom/p2psim/impl/topology/util/PositionVector.java b/src/de/tud/kom/p2psim/impl/topology/util/PositionVector.java
index 0642c2b546d3c7d56a6eae50856de3051f3ffea0..4762d2adcc67342332dd6f015824656501a2949e 100644
--- a/src/de/tud/kom/p2psim/impl/topology/util/PositionVector.java
+++ b/src/de/tud/kom/p2psim/impl/topology/util/PositionVector.java
@@ -303,11 +303,13 @@ public class PositionVector implements Location {
 	 * Multiply this vector with a scalar value
 	 * 
 	 * @param multi
+	 * @return the vector
 	 */
-	public void multiplyScalar(double multi) {
+	public PositionVector multiplyScalar(double multi) {
 		for (int i = 0; i < dimensions; i++) {
 			setEntry(i, multi * getEntry(i));
 		}
+		return this;
 	}
 
 	/**
@@ -402,8 +404,9 @@ public class PositionVector implements Location {
 	}
 
 	@Override
-	public String toString() {				
-		return "PV("+getDimensions()+") " + Arrays.toString(values) + "";			
+	public String toString() {		
+		return "(" + values[0] + ", " + values[1] + ")";
+		//return "PV("+getDimensions()+") " + Arrays.toString(values) + "";			
 	}
 	
 	@Override