Bug 146796 Error message pop up if display text contain non-digital char when add next item
Description: In decimal type parameter creation,display type is "list box", Error message pop up if "display text" contain non-digital char when add next item. Steps: 1.Create a new decimal parameter 2.Set display type as "list box" 3.Input one item: value:1, display text:test 4.Input another item: Value:2 Actual result: error message pop up: The display text already exists! Expected result: Input item succussfully.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
{
				if ( choice == dummyChoice )
				{
					text = INPUT_PROPMT;
				}
				else
				{
					text = choice.getValue( );
				}
			}
			else if ( columnIndex == valueIndex + 1 )
			{
				if ( choice != dummyChoice )
				{
					text = choice.getLabel( );
					if ( text == null )
					{
						text = format( choice.getValue( ) );
					}
				}
			}
			if ( text == null )
			{
				text = ""; 
			}
			return text;
		}
		public void addListener( ILabelProviderListener listener )
		{
		}