Hi! Thank you for the reply!
Well, the observed behavior was that, if I used the variable on the search field, and press "Search" afterwards, the "Stop" button blinked once, and the search was stopped.
I mentioned "was" because, after reading your message, I tried to test it again, having the aforementioned behavior, but then I opted to use the "'ol' reliable" method of reinstalling, following the next steps:
1) Restoring the settings, to see if something that I configured was affecting.
2) Testing (result: No OK. It didn't worked)
3) Uninstalling 6.3 (using Revo Uninstaller)
4) Reinstalling 6.1.1
5) Testing (result: Ok, the variable worked)
6) Uninstalling 6.1.1 (using Revo Uninstaller)
7) Reinstalling 6.3c (the "c" is on the name of the installer)
Testing (result: Ok, the variable worked)
9) Testing again after removing the trial license - going FREE (result: Ok, the variable worked)
So far, the only anomaly that I've found is that the Pro Trial Licence keeps coming back even if I removed it, but I think that I can live with it (for a while), so, I'm not quite sure what happened the first time that I installed the application.
By the way, there's a source where I can read about which variables can be used on the application?
Edit: a typo, and that I forget my manners. Sorry.