need similar

chance    = 80
basebet   = balance/20000
nextbet   = balance/20000
losscount = 0
wincount  = 0
bethigh   = true
function dobet()
    if win then
        bethigh = true
        nextbet = basebet
        chance  = 80
        wincount += 1
        losscount = 0
    else
        losscount += 1
        nextbet = previousbet*8
    end
    if (losscount > 0) or (wincount > 10) then
        chance   = 20
        nextbet  = previousbet*1.4
        bethigh  = false
        wincount = 0
    end
    if (losscount > 4) then
        chance    = 80
        nextbet   = previousbet*20
        losscount = 0
        wincount  = 0
        bethigh   = true
        end
end