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
&& !DesignChoiceConstants.PARAM_CONTROL_CHECK_BOX.equals( newControlType ) )
				{
					for ( Iterator iter = choiceList.iterator( ); iter.hasNext( ); )
					{
						SelectionChoice choice = (SelectionChoice) iter.next( );
						if ( isValidValue( choice.getValue( ) ) == null )
						{
							selectionChioceList.addItem( choice );
						}
					}
				}
				inputParameter.setDataSetName( null );
				inputParameter.setValueExpr( null );
				inputParameter.setLabelExpr( null );
			}
			else
			{
				
				inputParameter.setValueType( DesignChoiceConstants.PARAM_VALUE_TYPE_DYNAMIC );
				inputParameter.setDataSetName( dataSetChooser.getText( ) );
				inputParameter.setValueExpr( getExpression( columnChooser.getText( ) ) );
				inputParameter.setLabelExpr( getExpression( displayTextChooser.getText( ) ) );
			}
			
			inputParameter.setHelpText( UIUtil.convertToModelString( helpTextEditor.getText( ),
					false ) );
			
			String format = formatCategroy;
			if ( formatPattern != null )
			{