risky scripty

lol = balance/1000
look = balance/100
chance = 49
nextbet = lol
bethigh=true
function dobet()
nextbet = previousbet
if currentstreak == 3 then
    nextbet = look
end
if currentstreak == -4 then
nexbet = lol
end
if currentstreak == 5 then
nextbet = lol
end
if currentstreak == -8 then
nextbet = lol
end
if currentstreak == -2 then
nextbet = previousbet*4
end
end