Set 2 series at once

Question

I\'m trying to set Highs and Lows in 2 series at the same time, but can\'t seem to get the code right.
It should plot the entered high and low values at every intraday bar,

Answer 1

You can now change the values through the script's inputs. Added a few comments in code. Feel free to ask if what's going isn't clear:

//@version=4
study("SPX 5", overlay=true)
// Get values through Inputs.
spHi1 = input(2770)
spLo1 = input(2700)
spHi2 = input(2860)
spLo2 = input(2800)

// === FUNCTIONS === 
isDate(y,m,d) => year==y and month==m and dayofmonth==d

drawHiLo(y,m,d,l,h) => 
    // Vars are initialized to na, so we only need to assign them a value when our conditions becomes true.
    float ret1 = na
    float ret2 = na
    if isDate(y,m,d) and timeframe.isintraday
        ret1 := l
        ret2 := h 
    [ret1, ret2]

// === MAIN ===
// Make 2 separate call to function, but need to store results in different variables for each call.
[lo1,hi1] = drawHiLo(2020,04,13,spLo1,spHi1)
[lo2,hi2] = drawHiLo(2020,04,14,spLo2,spHi2)

plot(hi1, style=plot.style_circles, color=color.lime)
plot(lo1, style=plot.style_circles, color=color.lime)
plot(hi2, style=plot.style_circles, color=color.green)
plot(lo2, style=plot.style_circles, color=color.green)

Nice concept with the function, btw. Congrats.