text: Title: Issue with dates format in request options
  Body: Hello, 
  Sorry if I am in the wrong place I am new here.
  I have an issue when I use the csv_req_option with dates. The date filter isn't applied when I pass it in argument whereas it works for all kinds of string.
  
  Imagine the next dashboard : 
  Col A = Date 
  Col B = Event 
  
  if I use 
  csv_req_option = TSC.CSVRequestOptions()
  csv_req_option.vf('any Event')
  so far everything works
  
  now 
  csv_req_option = TSC.CSVRequestOptions()
  csv_req_option.vf('01/01/2021')
  it doesn't work the filter isn't applied
  
  I have tried different date formats but it didn't work...
  
  Thanks for your help.
  
  Best