enhanced scatter image for points

Hi,

I am looking for ways to include images on scatter plot for each bubble. I came across the following link and it seems like this option would work as there are different images assigned per shape within shape column. 

https://blog.pragmaticworks.com/power-bi-custom-visuals-enhanced-scatter

However, the video or content doesn't explain how different shapes are assigned or connected with the shape column having values 0 to 10. 0 coresponds to some shape image, but which one and how its is linked.

If someone knows this, can you please explain. I need to put different images per bubble.

Also, please let me know if i need to edit my excel or power bi or both. please be very detailed!

Thank you!