try this guys

fraction = 16
basebet  = balance/fraction
chance   = 49.95
nextbet  = basebet
bethigh  = false
james    = balance
target   = 160
bin      = 0
bot      = 0
zim      = 0
snow     = balance
william  = balance
resetstats()
function dobet()
        if !win then
    bin+=1
end
    if (bin>=4) then
        nextbet = previousbet*2
        bin     = 0
    end
    if (balance<(snow-(basebet*3))) then
        bot+=1
    end
    if (bot>=2) then
        nextbet = previousbet*2
        bot     = 0
    end
       if (balance>=(snow+(basebet*7))) then
        nextbet = previousbet*2
        snow    = balance
    end
      if (nextbet>=(balance-(snow+(basebet*20)))) then
          nextbet = balance/16
        james   = balance
    end
  if balance>james and win then
      nextbet = basebet
    bin     = 0
    james   = balance
end
if balance>target then
       stop()
end
end