i think i fixed it

basebet    = balance/5000
base       = balance/5000
chance     = 24.975
nextbet    = basebet
bethigh    = false
oldbal     = balance
oldbalance = balance
target     = 50000
sux        = 0
wage       = 0
bim        = 0
free       = false
resetstats()


function dobet()
    if (balance>=(oldbal+(basebet*7))) then
       nextbet = previousbet*2
      oldbal = balance
  end
  if (balance<=(oldbal-(basebet*3))) then
      nextbet = previousbet/2
      basebet = nextbet
      oldbal  = balance
  end
  if (balance<=(oldbal-(basebet*7))) then
        nextbet = previousbet*2
        basebet = nextbet
        oldbal  = balance
  end
  if nextbet>=balance/50 and win then
      nextbet = base
  end
  if balance>=oldbalance*2 then
      basebet    = balance/5000
      nextbet    = balance/5000
      base       = balance/5000
      oldbal     = balance
      oldbalance = balance
  end
  if nextbet<base then
      nextbet = base
  end
if (balance>=target) then
    stop()
end
end