How to display arrows in Arcscene?

[zhengren]

Hi, everyone,

I recently met a problem when I displaying my customized polyline symbol in Arcscene. I use the arrow symbol in ArcMap to stand for the direction of lines, and it work well. However, when I display them in Arcscene, the line is still there, but the Arrows at the end of lines are missing.(As figures below)  I searched for some solutions, but I haven't got any idea yet? Can anyone give me some suggestion? Thank you very much.

[zhengren]

By the way, it is not the color issue, I changed the color, and there is still no arrows

[DanPatterson_Retired]

About symbolizing lines with 3D symbols—Help | ArcGIS for Desktop Is that the link you are examining?