Bug 190727 [regression]Default value issue when switch report parameter from textbox to listbox.[0705]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
private static final String LABEL_DATE_PROMPT = Messages.getFormattedString( "ParameterDialog.date.prompt", new String[]{"YYYY-MM-DD"} ); 
	
	private static final String LABEL_TIME_PROMPT = Messages.getFormattedString( "ParameterDialog.time.prompt", new String[]{"hh:mm:ss"} ); 
	private static final String LABEL_PROMPT_TEXT = Messages.getString( "ParameterDialog.Label.PromptText" ); 
	private static final String LABEL_PARAM_DATA_TYPE = Messages.getString( "ParameterDialog.Label.DataType" ); 
	private static final String LABEL_DISPALY_TYPE = Messages.getString( "ParameterDialog.Label.DisplayType" ); 
	private static final String LABEL_DEFAULT_VALUE = Messages.getString( "ParameterDialog.Label.DefaultValue" ); 
	private static final String LABEL_HELP_TEXT = Messages.getString( "ParameterDialog.Label.HelpText" ); 
	private static final String LABEL_LIST_OF_VALUE = Messages.getString( "ParameterDialog.Label.ListOfValue" ); 
	private static final String LABEL_SORT_GROUP = Messages.getString( "ParameterDialog.Label.SortGroup" );
	private static final String LABEL_VALUES = Messages.getString( "ParameterDialog.Label.Value" ); 
	private static final String LABEL_FORMAT = Messages.getString( "ParameterDialog.Label.Format" ); 
	private static final String LABEL_LIST_LIMIT = Messages.getString( "ParameterDialog.Label.Listlimit" ); 
	private static final String LABEL_NULL = Messages.getString( "ParameterDialog.Label.Null" ); 
	private static final String LABEL_SELECT_DISPLAY_TEXT = Messages.getString( "ParameterDialog.Label.SelectDisplayText" ); 
	private static final String LABEL_SELECT_VALUE_COLUMN = Messages.getString( "ParameterDialog.Label.SelectValueColumn" ); 
	private static final String LABEL_SELECT_DATA_SET = Messages.getString( "ParameterDialog.Label.SelectDataSet" ); 
	private static final String LABEL_PREVIEW = Messages.getString( "ParameterDialog.Label.Preview" ); 
	private static final String LABEL_SORT_KEY = Messages.getString( "ParameterDialog.Label.SortKey" );
	private static final String LABEL_SORT_DIRECTION = Messages.getString( "ParameterDialog.Label.SortDirection" );
	private static final String CHECKBOX_ISREQUIRED = Messages.getString( "ParameterDialog.CheckBox.IsRequired" ); 
	private static final String CHECKBOX_DO_NOT_ECHO = Messages.getString( "ParameterDialog.CheckBox.DoNotEchoInput" ); 
	private static final String CHECKBOX_HIDDEN = Messages.getString( "ParameterDialog.CheckBox.Hidden" ); 
	private static final String CHECKBOX_DISTINCT = Messages.getString( "ParameterDialog.CheckBox.Distinct" );
	private static final String BUTTON_LABEL_CHANGE_FORMAT = Messages.getString( "ParameterDialog.Button.ChangeFormat" ); 
	private static final String BUTTON_LABEL_IMPORT = Messages.getString( "ParameterDialog.Button.ImportValue" ); 
	private static final String BUTTON_LABEL_SET_DEFAULT = Messages.getString( "ParameterDialog.Button.SetDefault" ); 
	private static final String BUTTON_LABEL_REMOVE_DEFAULT = Messages.getString( "ParameterDialog.Button.RemoveDefault" ); 
	private static final String BUTTON_CREATE_DATA_SET = Messages.getString( "ParameterDialog.Button.CreateDataSet" ); 
	private static final String RADIO_DYNAMIC = Messages.getString( "ParameterDialog.Radio.Dynamic" );