[Gambas-user] ProgressBar mistake

[Gianluigi]

Why do I get an error?
I attach two tests, one simulates this simple necessity and works
(ConceptualTest):
Show the FMain, then ask to the user for a number.
Pass the number to a module that processes it.
View to the user the processing time using a ProgressBar in an independent
window.
The other puts it into practice and does not work (BadProcessbarTest).
Note: If the ProgressBar is in the FMain, practice test also well working.

What am I doing wrong?

Regards
Gianluigi
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