Ah okay, I see what you mean now. I don’t believe this is currently possible with SplineMeshes but it could be fixed if the ‘Spline Up Dir’ was exposed like the rest of the values in blueprints. A variable could be created and made public, this would allow each blueprint to be adjusted as needed.
I created a Feature Request in our tracking software for this and our developers will be looking into it further.
Thanks,
TJ