Export values to Excel

Hi all…

I’m trying to get my Dynamo script to export the mullion and glazing values to Excel. I’m running into problems with the list showing “nulls”…but when I look at the list there are no “nulls”…and even when I add the remove nulls node, the error is still showing that the “value cannot be null”. (and credit to Josh Moore, I used his ideas when starting this script).

Can someone help?

…full script uploaded…Export Wall Types To Excel.dyn (23.0 KB)

Hello, you can try RemoveNull from DanEDU Dynamo just before Math.Sum