Bug 151794 Integer data can't be retrieved in dynamic parameter
Steps to reproduce: 1.New a sample data source and a data set from table "CUSTOMERS" 2.New a dynamic parameter, choose data type "Integer" Expected result: Those integer data set columns are listed in "Select value column" Actual result: No column available
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
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 List columnList;
	private IStructuredContentProvider contentProvider = new IStructuredContentProvider( ) {
		public void dispose( )
		{
		}
		public void inputChanged( Viewer viewer, Object oldInput,
				Object newInput )
		{
		}
		public Object[] getElements( Object inputElement )
		{