It seems to return number and stop when condition is met, but problem is this number is NOT the last roll number neither I can find it in betting history at all.  That's strange. I added resetseed() at start but it didn't help.

IT'S OK NOW!

chance=97.83
nextbet=0.00000100
bethigh=true

function dobet()

if (lastBet.Roll == 99.99) then
print(lastBet.Roll)
print(lastBet.id)
alarm()
stop()
end

end

I think it was some sorting problem. Thanks for help!