Sankey Diagram problem

Hello everyone. I'm trying to build a very simple Sankey Diagram. I have a problem when I try to see the the quantity of the source and destination items (for example, the number of the item "Automovil" shows as 1 - and it should be 9). I guess the problem may be that I have some items that remain the same as sources and destinations. Is there any way to solve this?

Thanks!