Generate the building revision version by importing an Excel table through Dynamo

Hello everyone, I’ve encountered a problem when creating floor slabs through Dynamo. How can I import an Excel table containing coordinate information (x/y/z) into Dynamo to generate floor slabs? Currently, the script I wrote can only generate points, but not create floor slabs. I hope to get some help from you. Thank you. The following are my script and the Excel file.

text-floor.xls (25 KB)
text-floor.dyn (19.5 KB)

I think you should have a look at this.