Show button if user name is ok

My app’s URL: https://go.glideapps.com/app/sxDYH8PFkdloiCl0Lqqs

Hello guys,
I have a stupid question (probably) :sweat_smile:

In my “live” tab from “race live” source in my table, i would like to show specific button if the current user fill up his pseudo wich is from “membres” source in my table (user data)

Thanks in advance :slight_smile: