Money Flow Indicator Alert

[ryanmurphy2000]

I am trying to add an alert for the TOS MFI study - so that I get an alert when it is overbought or oversold, but I must have done something wrong because it is alerting on every bar, instead of when it reaches +80 or -20

declare lower;

input over_Sold = 20;
input over_Bought = 80;

input length = 14;
input movingAvgLength = 1;

plot MoneyFlowIndex = Average(moneyflow(high, close, low, volume, length), movingAvgLength);
plot OverBought = over_Bought;
plot OverSold = over_Sold;

MoneyFlowIndex.DefineColor("OverBought", GetColor(5));
MoneyFlowIndex.DefineColor("Normal", GetColor(7));
MoneyFlowIndex.DefineColor("OverSold", GetColor(1));
MoneyFlowIndex.AssignValueColor(if MoneyFlowIndex > over_Bought then MoneyFlowIndex.color("OverBought") else if MoneyFlowIndex > over_Sold then MoneyFlowIndex.color("Normal") else MoneyFlowIndex.color("OverSold"));
OverBought.SetDefaultColor(GetColor(8));
OverSold.SetDefaultColor(GetColor(8));

Alert(over_Bought, "MFI Overbought", Alert.BAR, Sound.RING);
Alert(over_Sold, "MFI Oversold", Alert.BAR, Sound.RING);

 

[Rojo Grande]

Try this:

Alert(MoneyFlowIndex crosses above 80, "MFI Overbought", Alert.BAR, Sound.RING);
Alert(MoneyFlowIndex crosses below 20, "MFI Oversold", Alert.BAR, Sound.RING);