Bug 168808 Display text is lost after launching import values dialog
Steps to reproduce: 1.new a parameter; 2.select list box control type; 3.press "Import Values" button to import some values; 4.assign display texts for the imported values; 5.press "Import Values" button to launch import values dialog again; 6.press ok button on dialog; Expected result: The previous assigned display texts are remained. Actual result: The previous display texts are lost.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
{
					getValue( defaultValueEditor.getText( ));
				}
				catch ( BirtException e )
				{
					return ERROR_MSG_MISMATCH_DATA_TYPE;
				}
			}
		}
		return null;
	}
	private void refreshValueTable( )
	{
		if ( valueTable != null && !valueTable.getTable( ).isDisposed( ) )
		{
			valueTable.refresh( );
			updateTableButtons( );
		}
	}
	private boolean getProperty( String key )
	{
		return ( (Boolean) dirtyProperties.get( key ) ).booleanValue( );
	}
	private String format( String string )
	{
		
		
		
		
		if ( StringUtil.isBlank( string ) || formatCategroy == null )