Birdchirm / Profile

I'm trying to make EA but don't know to make it what I want EA to do Buy Enter when the price CLOSE above Simple MA 50 and RSI between 50-70 range. DO NOT ENTER if price is between Simple MA 20 and 50. Exit if the price close under SMA 20. Sell Enter

I'm trying to find out if I get the signal service what's the size of lot will be on my account? will it be as same as the signal provider or can I customize it