option chain custom column difficulty

[Feniks2020]

Good morning/evening,

Could anyone tell me why this code won't work????

def a = OptionDelta;
def b = OptionTheta;
def x = b/a;

# https://usethinkscript.com/threads/...from-a-percentage-value-indicator-study.5454/
# ensure x is between pMin and pMax and store in c1
def pMin = -5;
def pMax = 5;
def range = pMax - pMin;
def c1 = Min(pMax,Max(pMin,x));
# percent of range
def por = (c1-pMin)/range;
def red = Round(255*por,0);
def green = Round(255-255*por,0);

plot pct = x;

pct.AssignValueColor((CreateColor(red, green, 0)));
#END

ToS won't accept my def a and def b lines even though the thinkscript editor autocorrected and "placed" the OptionDelta and OptionTheta in the code
Doesn't make sense.....I made this script below for OpenInterest and Volume and it works just fine

def a = Open_Interest;
def b = volume;
def x = a/b;


# ensure x is between pMin and pMax and store in c1
def pMin = 0;
def pMax = 5;
def range = pMax - pMin;
def c1 = Min(pMax,Max(pMin,x));
# percent of range
def por = (c1-pMin)/range;
def red = Round(255*por,0);
def green = Round(255-255*por,0);

plot pct = x;

pct.AssignValueColor((CreateColor(red, green, 0)));
#END


Thanks in advance for your assistance!

 

[Feniks2020]

Fixed it!!!...needed to add () behind the optiondelta and optiontheta

 

[contactnovuspc]

Just curious...what are these value used for? wat are you looking at and how do you apply them to your trading setup?