Visual Studio Object Explorer shows that upt.ocx has Cancel method (image1).
Visual FoxPro properties do not show this methid (image2)

upt.Cancel() throws error

Property Cancel is not a method or event (image3)

?upt.Cancel() thows error

Invalid subscript reference.

Other methods of this control can called OK.
Maybe name Cancel is used by FoxPro internally so that method with same name cannot called.

How to call ActiveX Cancel method from FoxPro. I can provide this upt and test VFP code.