diff --git a/include/osgSim/MultiSwitch b/include/osgSim/MultiSwitch
index 506d96026..8516fe3f6 100644
--- a/include/osgSim/MultiSwitch
+++ b/include/osgSim/MultiSwitch
@@ -72,7 +72,16 @@ class OSGSIM_EXPORT MultiSwitch : public osg::Group
         typedef std::vector<bool>       ValueList;
         typedef std::vector<ValueList>  SwitchSetList;
         
+        /** Set the compile set of different values.*/
+        void setSwitchSetList(const SwitchSetList& switchSetList);
+
+        /** Get the compile set of different values.*/
         const SwitchSetList& getSwitchSetList() const { return _values; }
+
+        /** Set the a single set of different values for a particular switch set.*/
+        void setValueList(unsigned int switchSet, const ValueList& values);
+
+        /** Get the a single set of different values for a particular switch set.*/
         const ValueList& getValueList(unsigned int switchSet) const { return _values[switchSet]; }
 
     protected :
diff --git a/src/osgSim/MultiSwitch.cpp b/src/osgSim/MultiSwitch.cpp
index 3360494f3..92c8ed32e 100644
--- a/src/osgSim/MultiSwitch.cpp
+++ b/src/osgSim/MultiSwitch.cpp
@@ -217,3 +217,18 @@ bool MultiSwitch::setSingleChildOn(unsigned int switchSet, unsigned int pos)
     setValue(switchSet, pos,true);
     return true;
 }
+
+
+void MultiSwitch::setSwitchSetList(const SwitchSetList& switchSetList)
+{
+    expandToEncompassSwitchSet(switchSetList.size());
+
+    _values = switchSetList;
+}
+
+void MultiSwitch::setValueList(unsigned int switchSet, const ValueList& values)
+{
+    expandToEncompassSwitchSet(switchSet);
+
+    _values[switchSet] = values;
+}