YoB

I want to create a file that updates an image automatically when I upload a new image to replace it and the update happens whenever I open the file (without having to manually place/ drop the new image). It is like changing source of the image to update the file as and when desired. I want this overlay image to keep changing in 5 different spots on the file and also want the new overly image to replace the old image in the same spot and same size, as set originally. How can I achieve this in Affinity?