How to handle the scenario is which a figure updates based on a selected data set, but no data has been chosen yet?

[ahuang11]

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Reset FileInput with a watcher on its value

Hello there, I am having a problem trying to dynamically reset a FileInput widget. More precisely, I have two widgets : A MultiSelect with several options A FileInput to upload an Excel file enabling to have other selection possibilities that are not in the MultiSelect I would need the FileInput file to be reset as it is on initialisation with a “No File Chosen” message each time something is selected in the MultiSelect. Questions : How do you catch events on a FileInput object using par…