checkbox update

spring-webflow/src/main/java/org/springframework/webflow/mvc/view/AbstractMvcView.java

@@ -458,6 +458,10 @@ public abstract class AbstractMvcView implements View {
 			throw new UnsupportedOperationException("Setting request parameters is not allowed");
 		}
 
+		public String toString() {
+			return parameterName;
+		}
+
 	}
 
 	private static class FormatterBackedMappingConversionExecutor implements ConversionExecutor {