doPreview( formatCategroy != DesignChoiceConstants.STRING_FORMAT_TYPE_CUSTOM ? formatCategroy : formatPattern );
doPreview( isCustom( ) ? formatPattern : formatCategroy );
	private void updateFormatField( )	{		String displayFormat;		IChoiceSet choiceSet = getFormatChoiceSet( getSelectedDataType( ) );		if ( choiceSet == null )		{// Boolean type;			displayFormat = DEUtil.getMetaDataDictionary( )					.getChoiceSet( DesignChoiceConstants.CHOICE_STRING_FORMAT_TYPE )					.findChoice( DesignChoiceConstants.STRING_FORMAT_TYPE_UNFORMATTED )					.getDisplayName( );		}		else		{			displayFormat = choiceSet.findChoice( formatCategroy )					.getDisplayName( );			if ( formatCategroy != DesignChoiceConstants.STRING_FORMAT_TYPE_CUSTOM )			{				displayFormat += ":  " + formatPattern; //$NON-NLS-1$			}		}		formatField.setText( "" + displayFormat ); //$NON-NLS-1$		changeFormat.setEnabled( choiceSet != null );		if ( selectedParameter != null )		{			doPreview( formatCategroy != DesignChoiceConstants.STRING_FORMAT_TYPE_CUSTOM ? formatCategroy					: formatPattern );		}	}