--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/ParameterMatrix.java	Wed May 16 13:43:15 2012 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/ParameterMatrix.java	Wed May 16 14:52:39 2012 +0000
@@ -19,6 +19,7 @@
 
 import de.intevation.flys.client.shared.model.DataItem;
 import de.intevation.flys.client.shared.model.IntegerOptionsData;
+import de.intevation.flys.client.shared.model.StringOptionsData;
 
 
 public class ParameterMatrix {
@@ -66,8 +67,41 @@
     public void addColumn(IntegerOptionsData group) {
         String groupTitle = group.getLabel();
 
-        Column col = new Column(groupTitle);
-        for (DataItem item: group.getItems()) {
+        Column     col   = new Column(groupTitle);
+        DataItem[] items = group.getItems();
+
+        if (items == null) {
+            GWT.log("No items found in StringOptionsData '" + groupTitle + "'");
+            return;
+        }
+
+        for (DataItem item: items) {
+            String title = item.getLabel();
+
+            if (valueNames.indexOf(title) < 0) {
+                valueNames.add(title);
+            }
+
+            col.addValue(item.getLabel(), item.getStringValue());
+        }
+
+        columnNames.add(groupTitle);
+        columns.put(groupTitle, col);
+    }
+
+
+    public void addColumn(StringOptionsData options) {
+        String groupTitle = options.getLabel();
+
+        Column     col   = new Column(groupTitle);
+        DataItem[] items = options.getItems();
+
+        if (items == null) {
+            GWT.log("No items found in StringOptionsData '" + groupTitle + "'");
+            return;
+        }
+
+        for (DataItem item: items) {
             String title = item.getLabel();
 
             if (valueNames.indexOf(title) < 0) {