While block error

[Marlene_Tapia_Diaz]

Every time I use the while block, both the emulator and the application get blocked.
Even when I use simple programming.

[ABG]

In your while loop you don't reduce global contar, so it will run forever.

[uskiara]

Dear,
if you want decrease a variable whenever you hit a button you can do something like the following (without a while):

Probably is not what you need, but at least it works.
Cheers.