Custom Watch list ParabolicSAR

Since you only asked me to point out what you were doing wrong, I will do just that. Which means this is not a complete solution.

You have structured this statement incorrectly:

def parabolicSAR = close [1] < parabolicSAR [0] ==close > ParabolicSAR;

You cannot (in Thinkscript), chain together multiple operators (>, <, ==) without using the keyword “and” to separate them. One way you can correct this statement is:

def parabolicSAR = close [1] < parabolicSAR [1] and close > ParabolicSAR;

Notice I changed two items. First item I changed was to adjust your index value on the parabolicSAR from [0] o [1]. This should match the index value used on anything you are comparing it to, in this case close[1]. I then replaced your double equals signs with the keyword “and”.

So what this says in English is: “The close of the previous bar is less than the parabolicSAR of the previous bar AND the close of the current bar is greater than parabolicSAR of the current bar”. This essentially defines a change in state for the parabolicSAR from short to long.

You have another error in this line of code:

assignBackgroundColor(if parabolicSAR <= 1 then color.RED else color.BLACK);

The result of parabolicSAR can only be a 1 or a 0. 1 for true and 0 for false. When you test for parabolicSAR less than or equal to 1 you have a result that is always true. You see that? It’s always going to be one or the other. You need to pick one, so get rid of the equal sign.

assignBackgroundColor(if parabolicSAR < 1 then color.RED else color.BLACK);