Why no closeField messages sent?

[Michael D Mays]

If I do this from a handler

  select char 1 of fld 1
  select char 2 of fld 2

an exitField message is sent from fld 1. But I cannot programatically 
select a fld, modify it, exit it and generate a closeField message.

What am I doing wrong? Is it possible? If not, why not?:)

Michael