sorry last one not working

chance=49
base=0.000001
prebet=0.0000001
function dobet()
 if win then
  nextbet=prebet
bethigh=true
else
nextbet=previousbet*2
end
if currentstreak == 5  then
nextbet=base
end
if currentstreak == -4  then
bethigh=false
end
if currentstreak == -5  then
nextbet=0.00002
end
if currentstreak == -10  then
nextbet=0.00018
end
if currentstreak == -15  then
nextbet=0.0003
bethigh=true
end
if currentstreak == -16  then
nextbet=base
end
end