How do I create a NavModifier with splines?

[vl2hmmp]

hello, I’m creating game that requires roads construction likes Cities Skylines. and it’s using AI navigation for path finding.

I found SplineComponent and SplineNavModifierComponent, add to Road Actor those. but SplineNavModifierComponent does not found SplineComponent.

of course, NavArea does not follow splines.

why? something wrong? or is there a better way?

I’m using UE5.5.1

thanks!