Bug 198239 Memory leak using script and also localized strings
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/script/ScriptHandler.java
sh.THREE_ELEMENT_ARRAY[0] = oArg1;
				sh.THREE_ELEMENT_ARRAY[1] = oArg2;
				sh.THREE_ELEMENT_ARRAY[2] = oArg3;
				Object oReturnValue = null;
				oReturnValue = sh.callJavaScriptFunction( f,
						sh.THREE_ELEMENT_ARRAY );
				return oReturnValue;
			}
			else
			{
				return null;
			}
		}
	}
	/**
	 * Evaluates the given expression and returns the value.
	 * 
	 * @param sScriptContent
	 */
	public final Object evaluate( String sScriptContent ) throws ChartException
	{
		final Context cx = Context.enter( );
		try
		{
			return cx.evaluateString( scope, sScriptContent, "<cmd>", 1, null ); 
		}
		catch ( RhinoException jsx )
		{
			throw convertException( jsx );
		}