I use a strategy with 2 levels for TP based on ATR bands. First TP is 40% of total position, second TP is 20 %, the remaining 40% goes on until strategy reverses from long to short and viceversa. So far, no problems.

Then after the 2nd TP is taken, I want to set a SL using a third value on ATR. The problem is that sometimes it works, sometimes not.

A screenshot:

`strategy('Strategy', initial_capital=100, precision=4, default_qty_type=strategy.percent_of_equity, commission_type=strategy.commission.percent, commission_value=0.02, slippage=0, margin_long = 2, margin_short = 2,default_qty_value=100, overlay=false)

start = timestamp(input(2024, 'start year'), input(1, 'start month'), input(1, 'start day'), input(1, 'start hour'), 00)
end = timestamp(input(2026, 'end year'), input(1, 'end month'), input(1, 'end day'), 00, 00)


//---------
//EMA Slope
//---------

//define slope inputs
average = input.string(title='Source MA Type', defval='EMA', options=['EMA', 'SMA'], group = "Slope inputs")
len = input.int(130, minval=1, title='Source MA Length', group = "Slope inputs")
slopeFlen = input(6, title='Fast Slope MA Length', group = "Slope inputs")
slopeSlen = input(11, title='Slow Slope MA Length', group = "Slope inputs")

//Variables
out = if average == 'EMA'
    ta.ema(close, len)
else
    ta.sma(close, len)

slp = ta.change(out) / out

emaslopeF = ta.ema(slp, slopeFlen)
emaslopeS = ta.ema(slp, slopeSlen)


//plot
plot(slp*100, color=color.rgb(145, 35, 139), title = 'Slope', linewidth = 2)
plot(emaslopeF*100, color=color.rgb(59, 226, 255), title = 'EMA Slope fast',linewidth = 2)
plot(emaslopeS*100, color=color.rgb(88, 45, 187), title = 'EMA Slope slow', linewidth = 2)

percentTPATR= input.int(defval = 40, title = " Percent amount of 1st TP on ATR ", group = "Partial TP and SL quantity")
percent2TPATR= input.int(defval = 20, title = " Percent amount of 2nd TP on ATR ", group = "Partial TP and SL quantity")


//---
//ATR
//---

//Input settings for 1st TP
atrPeriod = input.int(title='ATR Period', defval=14, minval=1, group="ATR Bands Settings on First TP")
atrMultiplier = input.float(title='ATR Band Scale Factor', defval=1.4, step=0.1, minval=0.01, group="ATR Bands Settings on First TP")
atrSourceRef = "close"

//Calcs
atr = ta.atr(atrPeriod)
upline = close + atrMultiplier*atr[0]
bottomline = close - atrMultiplier*atr[0]


//Input settings for 2nd TP
atrPeriod2 = input.int(title='ATR Period', defval=14, minval=1, group="ATR Bands Settings on Second TP")
atrMultiplier2 = input.float(title='ATR Band Scale Factor', defval=4, step=0.1, minval=0.01, group="ATR Bands Settings on Second TP")
atrSourceRef2 = "close"

//Calcs
atr2 = ta.atr(atrPeriod2)
upline2 = close + atrMultiplier2*atr2[0]
bottomline2 = close - atrMultiplier2*atr2[0]


//Input settings for SL after 2nd TP
atrPeriod3 = input.int(title='ATR Period', defval=14, minval=1, group="ATR Bands Settings on SL after 2 TP")
atrMultiplier3 = input.float(title='ATR Band Scale Factor', defval=2, step=0.1, minval=0.01, group="ATR Bands Settings on SL after 2 TP")
atrSourceRef3 = "close"

//Calcs
atr3 = ta.atr(atrPeriod3)
upline3 = close + atrMultiplier3*atr3[0]
bottomline3 = close - atrMultiplier3*atr3[0]

//-------------------------
//Entry and exit conditions
//-------------------------

ConditionEntryL = emaslopeF > emaslopeS
ConditionEntryS = emaslopeF < emaslopeS

//Entry conditions
if time > start and time < end
    if ConditionEntryL
        strategy.entry('Long', direction=strategy.long)

if time > start and time < end
    if ConditionEntryS
        strategy.entry('Short', direction=strategy.short)


//------------------------------
//get ATR values on entry for TP
//------------------------------

//get ATR values on entry for 1st TP
var float fixedBottomline = 0
var float fixedUpline = 0

if nz(ConditionEntryL[1]) and strategy.position_size > 0 and strategy.position_size[1] <= 0
    fixedUpline := upline

if nz(ConditionEntryS[1]) and strategy.position_size < 0 and strategy.position_size[1] >= 0
    fixedBottomline := bottomline

//get ATR values on entry for 2nd TP
var float fixedBottomline2 = 0
var float fixedUpline2 = 0

if nz(ConditionEntryL[1]) and strategy.position_size > 0 and strategy.position_size[1] <= 0
    fixedUpline2 := upline2

if nz(ConditionEntryS[1]) and strategy.position_size < 0 and strategy.position_size[1] >= 0
    fixedBottomline2 := bottomline2

//get ATR values on entry for SL after 2 TP
var float fixedBottomline3 = 0
var float fixedUpline3 = 0

if nz(ConditionEntryL[1]) and strategy.position_size > 0 and strategy.position_size[1] <= 0
    fixedUpline3 := upline3

if nz(ConditionEntryS[1]) and strategy.position_size < 0 and strategy.position_size[1] >= 0
    fixedBottomline3 := bottomline3

//-------------
//Exit Strategy
//-------------


if time > start and time < end
    if strategy.position_size > 0

        strategy.exit("Long ATR 40% Take Profit", disable_alert=true, limit=fixedUpline, qty_percent=percentTPATR)
        strategy.exit("Long ATR 20% Take Profit", disable_alert=true, limit=fixedUpline2, qty_percent=percent2TPATR)

    if high >= fixedUpline2
        strategy.exit("Long SL", from_entry="Long", stop=fixedUpline3) //I'm not sure if this is correct

if time > start and time < end
    if strategy.position_size < 0
        strategy.exit("Short ATR 40% Take Profit", disable_alert=true, limit=fixedBottomline, qty_percent=percentTPATR)
        strategy.exit("Short ATR 20% Take Profit", disable_alert=true, limit=fixedBottomline2, qty_percent=percent2TPATR)

    if low <= fixedBottomline2
        strategy.exit("ShortSL", from_entry="Short", stop=fixedBottomline3) //I'm not sure if this is correct
`