diff --git a/src/main/java/de/dhbwstuttgart/bytecode/constraint/TPHConstraint.java b/src/main/java/de/dhbwstuttgart/bytecode/constraint/TPHConstraint.java
index 6bd8bcab..0e3c9ed8 100644
--- a/src/main/java/de/dhbwstuttgart/bytecode/constraint/TPHConstraint.java
+++ b/src/main/java/de/dhbwstuttgart/bytecode/constraint/TPHConstraint.java
@@ -4,6 +4,7 @@ public class TPHConstraint {
 	protected String left;
 	protected String right;
 	protected Relation rel;
+	protected int variance; //noch nicht benutzt
 	public enum Relation{
 		EXTENDS, EQUAL
 	}