How to stop line plots once trade is closed?

Hi, does anyone know how I would stop the TP/SL lines plotting once the trade is closed? Level plots I use below:

// S/L T/P Line Plots
longStop = na
longStop := shortCondition ? na : longCondition and strategy.position_size <=0 ? close - (atrout * stopMult) : longStop[1]
shortStop = na
shortStop := longCondition ? na : shortCondition and strategy.position_size >=0 ? close + (atrout * stopMult) : shortStop[1]

longTP = na
longTP := shortCondition ? na : longCondition and strategy.position_size <=0 ? close + (atrout * profitMult) : longTP[1]
shortTP = na
shortTP := longCondition ? na : shortCondition and strategy.position_size >=0 ? close - (atrout * profitMult) : shortTP[1]

strategy.exit("Long", "Long", stop=longStop, limit=longTP)
strategy.exit("Short", "Short", stop=shortStop, limit=shortTP)

s1 = plot(longStop, style=linebr, color=red, linewidth=1, title='Long ATR Stop')
s2 = plot(shortStop, style=linebr, color=red, linewidth=1, title='Short ATR Stop')
tp1 = plot(longTP, style=linebr, color=green, linewidth=1, title='Long ATR TP')
tp2 = plot(shortTP, style=linebr, color=green, linewidth=1, title='Short ATR TP')