Overwrite image at the folder without changing the data source

[rubens_45345]

Hello! 
I have a dropbox excel source where i stablish the file path to my images,

This works correct at first but when i update the image keeping the same name i give to it, this image doesn't change at the app. 
This is before 

This is after

This is what i should see when i change the image but keep the name

But if i manually change it filepath an it name, shows the new image correctly- The last doesn't work for me. I need to keep the name, the filepath and only overwrite the image.
I read in an old post that the only way the app understads the change of image is changing the path, is this correct?
Anyone knows how to keep the same filpath and image name  and refresh the app correctly?

[AleksiAlkio]

Unfortunately that approach won't work. You need to change the file name.