I watched this video several times. Tried different things but the Revit parameter is not updated with the data I added in excel. I even created the schedule to show all instances, the revit parameter is an instance so no strange constraints or anything in Revit could prevent this from working.
At first I used a formula in excel to generate the parameter value, I also just added plain data to test it.
Still no values are added in Revit.
As schedules and elements in Revit can have several different options and parameters, we would need to reproduce this on our end to see what’s up.
Could you share a portion of you model we can use for debugging?