Keyboard shortcut and lock panel

Hi,
I have this problem. I use LV8.2.1 win xp
I made a program to test a device. There are some buttons on the front panel, one is "Start", to obv start the test.
Mechanical action is set to "switch when pressed"
The event that handle that has a check on "lock front panel activity until this event completes".
I check this because I don't want user to accidentaly or on purpose click other things that will stay on event's queue, providing some kind of crap behaviour...
BUT
start button control has also a binding to "enter" key, because the test must be done many many times (production line) and it's better than click every time.
The PROBLEM is that hitting keyboard bypass in some way the lock front panel check, so as soon the test finishes, start button results immediately pressed and test starts again....
How can I do to avoid this?
thanks

Attached source + images of front panel/block diagram of the core of my problem.
PROBLEM: hit "return" key during the test makes UNWANTED new tests! even if  I check the "lock front panel activity"
CAUSE: Labview event manager queue events, it is asynchronous, it's different behaviour from Microsfot Visual C#.
keyboard action is not front panel activity, so it fires an event, that is queued and executed just after the previous.
The solution I've found doesn't work, so if someone has a workaround...
we can talk about solutions to this problem.
Haven't found anything similar in the forum.
thanks
Attachments:
Bug interface.vi ‏16 KB
bug interface front panel.jpg ‏53 KB
bug interface.jpg ‏93 KB

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