Export revit schedule, change/add data in excel & import again

you’re not using the element.setparameterbyname right …

here’s a little example using 99.99% ootb nodes:

I extract the same data as the schedule and make sure to get guid of elements :


here’s the result in excel:

I change the values I want in excel:

Then back to revit (id to element is from Archi lab package) :

the schedule shows the modifications:

I suggest you use this example and read some basic tutorials from the dynamo primer, you’ll get where you want pretty fast.

There is also a plug in that does this in a way more straightforward way with a great user interface: BIMLink.