Hey,
If you want to open it you’ll need Dynamo 2 (you can tell because it says auto on the nodes).
I was trying to bring to your attention the different node for creating sheets & the 3 views, 3 sheet names, 3 sheet numbers & 1 sheet template that are fed into it.
I have had a play with the node you were using and I can’t get it to work. It’s also not giving any errors. The sheet by number node gives some feed back if there is an error, the view is too big for the sheet etc.
The code block A…C is creating a range between the 2 inputs, so if you fed A=1 and B = 5 you would get 1,2,3,4,5 The code block a + b is being used to combine 2 strings, so if you fed in "Sheet " and “Floor Plan” you would get out “Sheet Floor Plan”.
As I said above, if you can give a Revit file which you are using it will be easier to identify the problem.
Hope that helps,
Mark