Here it is :
function KolIndicator(Price_Field, Angle)
{
a = (22/7)*(Angle/180);
Num = sin(1*a) * Price_Field + sin(2*a) * Ref(Price_Field,-1) + sin(3*a) * Ref(Price_Field,-2) + sin(4*a) * Ref(Price_Field,-3) + sin(5*a) * Ref(Price_Field,-4);
Den = sin(a) + sin(2*a) + sin (3*a) + sin(4*a) + sin(5*a);
kolkata = Num / Den;
return kolkata;
}
Angle = Param("ANGLE", 30, 0, 360, 1);
Field = ParamField("Price Field", 3);
Plot(KolIndicator(Field, Angle), "Kol Indicator", ParamColor("Color", colorLightGrey));