script "conf"

data px = subscribe(data.ohlcv)

pane wt = pane(title: "WT", height: 0.3)

plot a = plot.line(title: "A", on: wt)
plot b = plot.line(title: "B")

fill f = fill.between(a, b, color: color.rgb(0, 0, 255, 40))

state la = entities.linePool(max: 4, on: wt)
state lb = entities.linePool(max: 4)
state lf = entities.lineFillPool(max: 4, on: wt)

on px.close {
  a.plot(px.close)
  b.plot(px.close)
  lf.get(1).set(la.get(1), lb.get(2))
}

script "fixed"
data chart = subscribe(data.ohlcv)
plot low = plot.line(title: "Low")
plot high = plot.line(title: "High")
fill band = fill.between(low, high)
on chart.update { low.plot(chart.low)
  high.plot(chart.high) }