How to upload cascading lists from excel to Kobotoolbox

Hello community,
I need to know how to upload cascading lists to Kobotoolbox so that if ever I modify the Excel sheet, Kobotoolbox is automatically updated.
Thank you so much

@Nzisabira, you could always add a cascading select question as outlined in this support article Adding Cascading Select Questions. But once you have deployed your form, it is always advised to download your survey project as XLSForm and then update it manually in the XLSForm.