TICK high/low/ema

//@version=2
//I have no clue of what I did here. Got no experience of programming. Feel free too improve. The TEAL Colored line indicates HIGHEST ticks of the period and the RED indicates LOWEST. The yellow is just a EMA of ohlc/4.
//could probably be used for trading mean reversals by long/shorting the low/high of the day in a sideways market.
study(title="TICK", shorttitle="TICK", overlay=false)

sym1 = "TICK", res1 = period, source1 = high
plot(security(sym1, res1, source1), color=teal, linewidth=2)

sym2 = "TICK", res2 = period, source2 = low
plot(security(sym2, res2, source2), color=red, linewidth=2)

hline(0, color=green, linewidth=1)
linje1 = hline(760, color=blue)
linje2 = hline(-760, color=blue)

medel = security("TICK", period, ema(ohlc4, 3))

plot(medel, color=yellow, linewidth=2)