Bug 153391 Some Options in Edit Parameter dialog haven't been saved.
Description: Some Options in Edit Parameter dialog haven't been saved. Steps to reproduce: 1. new a parameter, boolean type, tick AllowNUll and sort alphabetically... 2. Close the dialog and reopen it. 3. new a parameter, string, combo-box, tick AllowNull. 4. Close the dialog and reopen it. Expected result: Ticked options' status are saved Actual result: After reopen parameter dialog, options are unticked.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
}
				else if ( DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX.equals( type ) )
				{
					clearArea( valueArea );
					switchToText( );
				}
				valueArea.layout( );
				initValueArea( );
				lastControlType = type;
			}
		}
		refreshCheckBoxArea( );
		updateMessageLine( );
		boolean radioEnable = false;
		if ( PARAM_CONTROL_COMBO.equals( getSelectedControlType( ) )
				|| PARAM_CONTROL_LIST.equals( getSelectedControlType( ) ) )
		{
			radioEnable = true;
		}
		if ( radioEnable != staticRadio.isEnabled( ) )
		{
			staticRadio.setEnabled( radioEnable );
			dynamicRadio.setEnabled( radioEnable );
		}
	}
	private void switchParamterType( )
	{
		clearArea( valueArea );
		lastControlType = null;
		if ( isStatic( ) )