Issue with headers in CSV on Shiny App

[aryehjc]

Hello,
I refer to the implementation of UpSetR on https://gehlenborglab.shinyapps.io/upsetr/
I have created headers in the CSV with brackets and quotation marks as part of the headers. for example ('1') ('2') and ('3').
The plot turns out good with the correct set intersections, but on the app the brackets and quotation marks are replaced by ellipses and they appear as ...1... ....2... , etc.
Could you please tell me how to input these characters in the CSV to allow the recognition of these characters in the headers?
Thank you!