Hello everyone i use Fibonacci retracement for entry i am new on this platform and i don't know how to set Ea to take entries on 0.5 fib level and sl at 0 fib level and i don't know how to set up my own formula to calculate lot sizes for trades
I usually use the formula which combines the total cost of trade which includes trade commission+ money loss if trade hits sl

Formula: lot size= Risk amount/((value of 1 pip for 1 standard lot×sl)+trade commission)

I don't know how to integrate this formula in my Ea
If anyone can help plz let me know