Need some help making a previous button on my page

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1

Hello ! : ]
i tried to make a previous button but it doesn’t work currently :

1250×699 33.9 KB

using this tut: Velo Tutorial: Creating Previous and Next Buttons for a Dynamic Item Page with Code | Help Center | Wix.com

2

Looks to me like you put all the code in one page. I think if you go back over the article, it explains that the code belongs on two different pages.

3

i didn’t understand how to add the first code (index page) to the code panel.