Thanks David, I tried to replicate the model in the example, but I get and error in the uploading part of the window. Do I have to setup in some special way a server to upload the pictures? Because when I try to run the application it appears an exclamation mark (I'm not allowed to run the application even) in the project and it gives an output log with some errors, I don't know what part I missed.
My model looks like this, don't know if it helps to have a visual.
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