Calculation P/L by comments

i am looking for any indicator or scripts for Calculation P/L for all orders which have the same comments

If i have this opening orders

Buy EURUSD : comment S1
Sell EURCAD : comment S1
Sell GBPUSD : comment S1

Buy EURUSD : comment S2
Sell EURCAD : comment S2
Sell GBPUSD : comment S1

when i apply the indicator on the chart i want it to show how much the total profit for all trades with the same comments like this

Trade S1 : +25
Trade S2 : -50