Dynamic Lighting question

I watched a couple of (youtube) videos on Dynamic lighting.  when using the polyline tool the videos show to just keep left clicking as I draw around the map.  When I do this, I get triangles instead of lines.  I am assuming I have a setting not correct but I cannot find anything.  Am I doing something wrong or did something change since the videos were made? 

If you are doing continuous lines then left clicking will be sufficient as you go around the outline of your dungeon etc. To end a 'track' early you can right click which will confirm that section and allow you to start a new section from another point on the map with a left click again.

Michael, to me it sounds like you have a Fill color selected. If you have a Fill color, it will make the appearance of Triangles as you draw a line, as described. On the polygon drawing tool you have 2 color palette selectors. Make the left-one the color for your Dynamic Light indicators (something nice and bright, only the GM can see it, try Green or Yellow or Pink). &nbsp;Make the right-hand color palette transparent, as it started before you put a color there. The transparent color is a little grey-and-white checkerboard, it's the bottom-right color selection on the color picker.&nbsp; Wiki Documentation, <a href="https://wiki.roll20.net/Drawing_Tools#Polygon.2FLi" rel="nofollow">https://wiki.roll20.net/Drawing_Tools#Polygon.2FLi</a>...

Thank you Gold, it was what you were explaining. &nbsp;I fixed and it works for me now. &nbsp;Again, thank you.