>I may be wrong in this case, but I have seen many automation cases where you must pass a parameter, even if the the parameter value isn't important by itself. Try
>
>

upt.Cancel(.T.)

It looks like using Object

upt.Object.Cancel()

works. It this OK ?

I got .Object keyword info from

https://books.google.ee/books?id=iF97jVKcqhEC&pg=PA627&lpg=PA627&dq=visual+foxpro+object+keyword+activex&source=bl&ots=6wu10OCEpW&sig=ACfU3U1geQUtZmWqUBCH0XwK-uUlS3ReKg&hl=en&sa=X&ved=2ahUKEwi849eJj5TiAhXkx6YKHTh-DzAQ6AEwBnoECAgQAQ#v=onepage&q=visual%20foxpro%20object%20keyword%20activex&f=false

and

http://www.dfpug.de/loseblattsammlung%5Cmigration%5Cwhitepapers/activex.htm