Bug 152438 Once the focus is set in the table of the parameter dialog press any arrow key will delete one line
Description: Once the focus is set in the table of the parameter dialog, press any arrow key will delete one line. Steps to reproduce: 1. New a parameter to open parameter editor 2. Set data type as String, set display type as List Box, list of value as Static, add or import some value into the table 3. Let the table get focus, press up/down arrow key Expected result: Focus moves between lines Actual result: Press any arrow key will delete one line
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
return null;
			}
		}
		else
		{
			if ( StringUtil.isBlank( value ) )
			{
				return ERROR_MSG_CANNOT_BE_BLANK;
			}
		}
		try
		{
			getValue( value );
		}
		catch ( BirtException e )
		{
			return ERROR_MSG_MISMATCH_DATA_TYPE;
		}
		return null;
	}
	private boolean isEqual( String value1, String value2 )
	{
		Object v1 = null;
		Object v2 = null;
		try
		{
			v1 = getValue( value1 );
			v2 = getValue( value2 );
		}
		catch ( BirtException e )