Bug 102436 Date/time value not stored correctly in report design
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
private static IChoiceSet controlType = DesignEngine.getMetaDataDictionary( )
			.getChoiceSet( DesignChoiceConstants.CHOICE_PARAM_CONTROL );
	private ScalarParameterHandle inputParameter;
	private boolean loading = true;
	private static final SelectionChoice dummyChoice = StructureFactory.createSelectionChoice( );
	private Text nameEditor, promptTextEditor, defaultValueEditor,
			helpTextEditor, formatField;
	
	private Label promptMessageLine;
	
	private CLabel errorMessageLine;
	
	private Button allowNull, allowBlank, doNotEcho, isHidden, needSort;
	
	private Button importValue, changeDefault, delete, changeFormat,
			createDataSet;
	
	private Button dynamicRadio, staticRadio;
	
	private Combo dataTypeChooser, controlTypeChooser, defaultValueChooser;
	
	private Combo dataSetChooser, columnChooser, displayTextChooser;
	
	private Label previewLabel;
	private TableViewer valueTable;
	private String lastDataType, lastControlType;
	private String formatCategroy, formatPattern;
	private String defaultValue;
	private Composite valueArea;
	private DataSetItemModel[] cachedColumns;