//@version=5
indicator("9 EMA and 15 EMA Divergence Strategy", overlay=true)
// Input for short and long EMAs
emaShortLength = input.int(9, title="Short EMA Length")
emaLongLength = input.int(15, title="Long EMA Length")
// Calculate EMAs
emaShort = ta.ema(close, emaShortLength)
...