Unable to select default Radio button using OptionGroup

Hi,

I have used FieldFactory inside a form to generate fields, and i have used OptionGroup to generate radio buttons for a field inside a FieldFactory and aligned OptionGroup in Horizontal using CSS, just have a look at my code and here am using generateRythmRadioButtons(final String caption) to return radio buttons,

private static final List<String> rythmOptions = Arrays
			.asList(new String[] {"steadyPulse", "unEvenPulse" });      // where steadyPulse, unEvenPulse are Item Id's


private Field generateRythmRadioButtons(final String caption) {

		final OptionGroup group = new OptionGroup(null, rythmOptions);
				
		group.setNullSelectionAllowed(false);

		group.select("steadyPulse"); 

		return group;
	}

but no luck, i am not getting steadyPulse as default selected option in the page, please do clarify me.

thanks & regards in advance

Rakesh

so,How to solve

Easiest way: set the value for your data source - you can also do that in its constructor etc. if a specific value should be used as a default.

Otherwise, you might need to manipulate the field (or data source) after setting the data source - you can't do this in the field factory.