Wallet Balance ==> represent you trading account wallet balance
Stop loss purcentage from entry ==> represent the pourcentage of the stop loss from the entry
risk purcentage per trade ==> represent the percentage of you wallet balance you are willing to loose after taking position in a trade, it is advisable to use a maximum risk of 3% or even much less.
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In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.