How can I make a watchlist out of 18 EMA and 50EMA crossover?

[FreefallJM03]

I need to make it for 2min, 5 min, 10 min, 15 min, 30 min, 1 hr, 2 hr, and 4hr. I imagine it would require one for each time period.

# Moving Average Crossover With Arrows, Alerts, Crossing Count and Bubble at Cross
# Mobius
# Chat Room Request 01.25.2017
# Modified a bit by BenTen

input price = close;
input fastLength = 18;
input slowLength = 50;
input averageType = AverageType.EXPONENTIAL;

plot FastMA = MovingAverage(averageType, price, fastLength);
plot SlowMA = MovingAverage(averageType, price, slowLength);
FastMA.SetDefaultColor(GetColor(1));
SlowMA.SetDefaultColor(GetColor(2));

plot ArrowUp = if FastMA crosses above SlowMA
then low
else double.nan;
ArrowUP.SetPaintingStrategy(PaintingStrategy.Arrow_UP);
ArrowUP.SetLineWeight(3);
ArrowUP.SetDefaultColor(Color.Green);
plot ArrowDN = if FastMA crosses below SlowMA
then high
else double.nan;
ArrowDN.SetPaintingStrategy(PaintingStrategy.Arrow_DOWN);
ArrowDN.SetLineWeight(3);
ArrowDN.SetDefaultColor(Color.Red);
Alert(ArrowUp, " ", Alert.Bar, Sound.Chimes);
Alert(ArrowDN, " ", Alert.Bar, Sound.Bell);

DefineGlobalColor("Bullish", color.green);
DefineGlobalColor("Bearish", color.red);
input seeClouds = yes ;
AddCloud(if(seeClouds,FastMA,double.NaN), SlowMA, GlobalColor("Bullish"), GlobalColor("Bearish"));
# End Code