Need a Lesson in Coding Please!

Hi ALL

Obviously not a coder, I have changed the color in the code to my liking and tried to change the style to a dot.....but that is not working for some reason.

The Draw line version works fine but when I replaced DRAW_LINE, with
DRAW_LINE,STYLE_DOT, the dot becomes a custom black 1,0.

What am I missing

Cheers

instead of SetIndexStyle(0,DRAW_LINE,STYLE_DOT,0,1);
try SetIndexStyle(0,DRAW_LINE,STYLE_DOT,1,Red);

Appreciated

cheers