risky scripting i think i nailed it

lol = balance/10000
look = balance/100
chance = 49.95
nextbet = lol
bethigh=true
function dobet()
nextbet = previousbet
if currentstreak == 2 then
    nextbet = lol
end
if currentstreak == 3 then
    nextbet = look
end
if currentstreak == -4 then
nexbet = previousbet*4
end
if currentstreak == 5 then
nextbet = lol
end
if currentstreak == -6 then
nextbet = previousbet*8
end
if currentstreak == -2 then
nextbet = previousbet*4
end
end