I'm able to add a dataframe to excel as a separate sheet. However, I want to be able to add a .CSV file that is already created as a sheet.

Code that works to add dataframe as a sheet:

```
library(xlsx)
write.xlsx(dataframe, file = excelFileName,
           sheetName=excelsheetname, append=TRUE,row.names = FALSE)

```

I need to be able to replicate the same thing as above. However, instead of a dataframe, it is a .CSV file. Is there a solution?

Thanks