M functions

ExportCsv.pq

// Exports the current table to csv. Pass full PathFile specification as parameter
(path as text, dataset as table) =>
let
    ConvertedPath = Text.Replace(path, "\", "/"),
    RScript = R.Execute("write.csv(dataset,"""&ConvertedPath&""") 
                         output <- dataset
                         ",[dataset=dataset]),
    output = RScript{[Name="output"]}[Value]
in
    output

Thank you Imke. I used your technique and it is very useful, all of it: the conversion of the parameter and the R.Execute to write the file out.