Yes, sorry, we've gotten slightly off track as we often do here!
I think that the bottom line is that it isn't all that easy to paste data from Excel to a web page. Indeed, creating a data-driven table on a web page is quite hard, even with the excellent help from Node-RED and the Dashboard table addon.
There are probably other ways you could achieve something though. Personally, I would probably use a CSV file rather than an Excel workbook format (.xls, etc) and save it to somewhere that Node-RED could access it. Then you can easily consume it in Node-RED.
