I have two variables, MyHigh and MyLow.
I would like to add a cloud with different colors depending on the close price.
This is the statement which is giving me an error.

AddCloud(MyLow, MyHigh, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW);

Update:
Checked with TDA support. Apparently AddCloud() does not support if/else statement

Mhaus 

I have two variables, MyHigh and MyLow. I would like to add a cloud with different colors depending on the close price. This is the statement which is giving me an error. AddCloud(MyLow, MyHigh, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW); Update: Checked with TDA support. Apparently AddCloud() does not support if/else statement

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Remember, AddCloud will color the area between the 2 values based on which one is greater. Therefore, you'd be way better off using an if/then/else clause based on the current value of close as compared to MyLow/MyHigh...so something like the following should do the trick. As always, you'll need to test & validate that it does what you expect/want.

If close > MyHigh Then AddCloud(MyHigh,MyLow,color.DARK_GREEN,color.YELLOW) Else IF
close < MyLow Then AddCloud(MyHigh,MyLow,color.LIGHT_RED,color.YELLOW) Else AddCloud (MyHigh,MyLow,color.YELLOW,color.YELLOW)

What this should do:
* If Close (aka last tx) is > MyHigh, the cloud should be colored DARK_GREEN.
* IF close <= MyHigh), then test to see if close is < MyLow. If it is, the cloud should be colored LIGHT_RED.
* If Neither condition is true, then the cloud will be colored YELLOW.

Mhaus 

I have two variables, MyHigh and MyLow. I would like to add a cloud with different colors depending on the close price. This is the statement which is giving me an error. AddCloud(MyLow, MyHigh, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW, if close > MyHigh then color.DARK_GREEN else if close < MyLow then color.LIGHT_RED else color.YELLOW); Update: Checked with TDA support. Apparently AddCloud() does not support if/else statement

If you need additional colors to visually indicate a condition
, you could change the color of the lines instead of the cloud. I tried two clouds, since I do not know the calculations of your MyHigh/MyLow variables I put the code below but also used a clould based on EMAs. With the cloud, the lines are hard to see, so I set their width to 3.

input showEMACloud = yes;
input showHLCloud = no ;
def ema9 = MovAvgExponential(length = 4);
def ema26 = MovAvgExponential(length = 13);
# cofirmed, "if" logic does not work in AddCloud() does not work, it is expecting a constant only for color
#AddCloud(ema4, ema13, if close > ema4 then Color.DARK_GREEN else if close < ema13 then Color.LIGHT_RED else Color.YELLOW, if close > ema4 then Color.DARK_GREEN else if close < ema13 then Color.LIGHT_RED else Color.YELLOW);
AddCloud(ema9, ema26, Color.GREEN, Color.RED);

plot Pema4 = if showEMACloud then ema9 else Double.NaN;
plot Pema13 = if showEMACloud then ema26 else Double.NaN;
Pema4.assignValueColor(if close > ema9 then Color.DARK_GREEN else if close < ema26 then Color.LIGHT_RED else Color.YELLOW);
Pema13.assignValueColor(if close > ema9 then Color.DARK_GREEN else if close < ema26 then Color.LIGHT_RED else Color.YELLOW);
Pema4.setLineWeight(3);
Pema13.setLineWeight(3);

plot PMyHigh = if showHLCloud then high else Double.NaN;
plot PMyLow = if showHLCloud then low else Double.NaN;
PMyHigh.assignValueColor(if close > PMyHigh then Color.DARK_GREEN else if close < PMyLow then Color.LIGHT_RED else Color.YELLOW);
PMyLow.assignValueColor(if close > PMyHigh then Color.DARK_GREEN else if close < PMyLow then Color.LIGHT_RED else Color.YELLOW);
PMyHigh.setLineWeight(3);
PMyLow.setLineWeight(3);