diff --git a/src/ui/interactivesimulation/TaskVariableTableModel.java b/src/ui/interactivesimulation/TaskVariableTableModel.java
index 05ce8df8bd44df522446d065448ee9de4e188cad..4911fbb3a9dfb7dac4126ff1dfeb96f768cd728a 100755
--- a/src/ui/interactivesimulation/TaskVariableTableModel.java
+++ b/src/ui/interactivesimulation/TaskVariableTableModel.java
@@ -184,7 +184,7 @@ public class TaskVariableTableModel extends AbstractTableModel {
 				try {
 				 val =  task.getAttributes().get(row+size-cpt).getInitialValue();
 				} catch (Exception e) {} 
-				if ((val == null) | (val.length() == 0)) {
+				if ((val == null) || (val.length() == 0)) {
 					return " - ";
 				} else {
 					return val;