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
if ( promptMessageLine != null && !promptMessageLine.isDisposed( ) )
		{
			if ( DesignChoiceConstants.PARAM_TYPE_DATETIME.equals( getSelectedDataType( ) ) )
			{
				promptMessageLine.setText( LABEL_DATETIME_PROMPT );
			}
			else
			{
				promptMessageLine.setText( "" ); 
			}
		}
		updateButtons( );
	}
	private String validateName( )
	{
		String name = nameEditor.getText( ).trim( );
		if ( name.length( ) == 0 )
		{
			return ERROR_MSG_NAME_IS_EMPTY;
		}
		if ( !name.equals( inputParameter.getName( ) )
				&& inputParameter.getModuleHandle( ).findParameter( name ) != null )
		{
			return ERROR_MSG_DUPLICATED_NAME;
		}
		return null;
	}
	private void refreshValueTable( )
	{
		if ( valueTable != null && !valueTable.getTable( ).isDisposed( ) )