Bug 136270 Group's data binding column can only be used by the group itself
If you add some data binding columns to a group, these columns can only be used by this group itself. It should has a way to make the child can use the parent group's data binding column.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
}, {
						"\\\\\\\\", "\\\\\"", "\\\\\'", 
				}
		};
		String result = str;
		for ( int i = 0; i < chars[0].length; i++ )
		{
			result = result.replaceAll( chars[0][i], chars[1][i] );
		}
		return result;
	}
	/**
	 * Gets decimal string given the number of zeros.
	 */
	public static String getDecmalStr( int decPlaces )
	{
		String defaultDecs = "0000000000"; 
		String decStr = ""; 
		if ( decPlaces > 0 && decPlaces < 10 )
		{
			decStr = defaultDecs.substring( 0, decPlaces );
		}
		else if ( decPlaces >= 10 )
		{
			if ( decPlaces > 100 )
			{
				decPlaces = 100;
			}
			int quotient = decPlaces / 10;
			int remainder = decPlaces % 10;