backtest simulation time period

[damian123]

Q1. What is the difference between the price and study periods?
I guess price is the market time series time period and the study is the backtest simulation time period.

Q2. How do I change the backtest time period?
Is it specified in chart.setmarket() in the range or replay argument?

const chart = new client.Session.Chart();
const pair = 'BINANCE:BTCUSDT';
const timeframe = '2D';
const range = 20

chart.setMarket(pair, {        
    timeframe: timeframe,
    currency: 'USD',
    // replay: Math.round(Date.now() / 1000) - 86400 * 7, // Seven days before now
    range: range,

The invite-only indicator I am using has some input in the GUI in the browser but I am not sure if this is relevant.