Randomize responses on kobo

Hello, I hope you are very well. I am trying to schedule a survey in Koboo, I would like to randomize the answer options, but keeping the first and last option fixed. Is there any suggestion to achieve this?

Welcome to the ODK forum, @Isabel! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a picture as your avatar because it helps build community!

Are you following the documentation for randomizing choice order?

Can you please share an XLSForm file with the question at issue?

Yes, but I can't find the way to set my last option

If you share an XLSForm (just needs the one question), it will be easier to troubleshoot.