Strategy MACD + RSI

strat.js

// Let's create our own strategy
var strat = {};

var parameters = {
    short: 12,
    long: 26,
    signal: 9,
    down: 0,
    up: 0,
    persistence: 1
};

var parameters1 = {
    interval: 14,
    low: 30,
    high: 70,
    persistence: 2
};


// Prepare everything our strat needs
strat.init = function() {
    // start of with no investment
    this.currentTrend = 'short';
    // your code!
    // add a native MACD
    
    this.addIndicator('mynativemacd', 'MACD', parameters);
    //add native RSI
    
    this.addIndicator('mynativeRSI', 'RSI', parameters1);
    
}

// What happens on every new candle?
strat.update = function(candle) {
    // your code!
}

// For debugging purposes.
strat.log = function() {
    // your code!

}

// Based on the newly calculated
// information, check if we should
// update or not.
strat.check = function() {
    // your code!
    //setting vars for MACD results
    var MACD = this.indicators.mynativemacd.macd;
    var MACDsaysBUY = parameters.down < MACD;
    var MACDsaysSELL = parameters.up > MACD;
    // setting vars for RSI results
    var RSI = this.indicators.mynativeRSI.rsi;
    var RSIsaysBUY = RSI > parameters1.high;
    var RSIsaysSELL = RSI < parameters1.low;
    /// Setting conditions

    if (this.currentTrend === 'long') {

        // maybe we need to advice short now?

        // only if BOTH MACD and RSI and CCI say so:
        if (MACDsaysSELL && RSIsaysSELL) {
            this.currentTrend = 'short';
            this.advice('short')
        }

    } else if (this.currentTrend === 'short') {

        // maybe we need to advice long now?

        // only if BOTH MACD and RSI and CCI say so:
        if (MACDsaysBUY && RSIsaysBUY) {
            this.currentTrend = 'long';
            this.advice('long')
        }

    }
}

module.exports = strat;

i just wondering how to know whether an indicator has 3 parameters rather than 2?
as explain in example above, why RSI has 4 parameters?(interval, low, high, persistence)?
i have read 'talib' file inside core folder, but didnt get any clue how to determine involved parameter of an indicator.

Can somebody walk me through getting this running in gekko? I thought I had it but I get the classic child process has died error in terminal.

What I did was made a copy of custom.js in the strategies folder. and pasted the revised code from here into the original custom.js and tried running it in the UI.