I am trying to change existing beam sizes in my Revit model based on an Excel spreadsheet that has new beam sizes. I am getting an error message that will not allow me to change the sizes. I have attached my Revit model, dynamo file, and the Excel spreadsheet with the new sizes. Can someone please explain to me how to change the existing beam sizes in my model to the new sizes within my spreadsheet. It would be helpful if you could provide screenshots to assist me with this.
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