Compare bool and float to determine plot (pine script v5) - boolean

Question

You folks helped me with another part of this script and I'm making good progress. However, I'm stuck again.
I added a code to produce a dynamic overbought/oversold line on the indicator. That part works great. Now, I'm wanting to add a plotshape when conditions are met to signal long or short. Unfortunately, I can't figure out how to compare a bool variable and a float variable. The dynamic OB/OS lines are floats. The crossover lines are bool.
What I want is for the (green/long) shape to plot when a crossover happens below the dynamic oversold line and the (red/short) shape to plot when the crossunder happens above the dynamic overbought line.
I've tried all kinds of things (var, loop with "while" using sb value as a trigger). I either break the code or I get every crossover plotted. Here is what I have that is stable. I took all my junk that didn't work out:
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © HammerGeek
//#version=5
indicator('Impulse MACD [HammerGeek - LazyBear]', shorttitle='IMACD_HG_LB', overlay=false)
lengthMA = input(34)
lengthSignal = input(9)
//OverBought = input.float(0.1)
//OverSold = input.float(-0.1)
calc_smma(src, len) =>
smma = 0.0
sma_1 = ta.sma(src, len)
smma := na(smma[1]) ? sma_1 : (smma[1] * (len - 1) + src) / len
smma
calc_zlema(src, length) =>
ema1 = ta.ema(src, length)
ema2 = ta.ema(ema1, length)
d = ema1 - ema2
ema1 + d
src = hlc3
hi = calc_smma(high, lengthMA)
lo = calc_smma(low, lengthMA)
mi = calc_zlema(src, lengthMA)
md = mi > hi ? mi - hi : mi < lo ? mi - lo : 0
sb = ta.sma(md, lengthSignal)
sh = md - sb
mda = ta.sma(md, lengthSignal)
OverBoughtLine = ta.highest(sb * 0.5, lengthMA*100)
OverSoldLine = ta.lowest(sb * 0.5, lengthSignal*100)
shsbCrossOver = ta.crossover(md, sb)
shsbCrossUnder = ta.crossunder(md, sb)
//mdc = src > mi ? src > hi ? color.lime : color.green : src < lo ? color.red : color.orange
mdc = color.green
plot(0, color=color.new(color.gray, 0), linewidth=1, title='MidLine')
plot(md, color=mdc, linewidth=2, title='ImpulseMACD', style=plot.style_line)
plot(sh, color=color.rgb(122, 5, 168, 40), linewidth=2, title='ImpulseHisto', style=plot.style_area)
plot(sb, color=color.rgb(255, 255, 255, transp = 40), linewidth=2, title='ImpulseMACDCDSignal')
plot(OverBoughtLine, color=color.new(#f3e032, 0), linewidth=1, title = 'Overbought Line')
plot(OverSoldLine, color=color.new(color.yellow, 0), linewidth=1, title = 'Oversold Line')
plotshape(shsbCrossOver, "LONG", shape.triangleup, location.bottom, color.new(color.green, 0))
plotshape(shsbCrossUnder, "SHORT", shape.triangledown, location.top, color.new(#cd0808, 0))
//ebc = input(false, title='Enable bar colors')
//barcolor(ebc ? mdc : na)

Answer 1

You cannot compare a bool with a float. It doesn't make any sense and it is not legal in pinescript.
What I want is for the (green/long) shape to plot when a crossover
happens below the dynamic oversold line and the (red/short) shape to
plot when the crossunder happens above the dynamic overbought line.
You want to check if the values you use in that crossover is under your dynamic oversold line at the time of crossover.
OverSoldLine = ta.lowest(sb * 0.5, lengthSignal*100)
shsbCrossOver = ta.crossover(md, sb)
is_good = shsbCrossOver and (md < OverSoldLine) and (sb < OverSoldLine)