Split failed with closed curve

I have been trying to split my polysurface with a closed curve that I named Split Curve. But when I do it says Split failed objects may not intersect or intersections may not split object. So, if anyone knows what to do in this situation, please help me out.

Split.3dm (46.9 KB)

Greetings,
Fosse

Hi Fosse - in this case the split curve is exactly on the joined edges of the object - rather than split, just Explode the object.

-Pascal

Thank you very much!

-Fosse

Is there a reason why it doesn’t mirror?

-Fosse

Hi Fosse - it is not clear what your action is but you do need to click to set the mirror axis end point.

-Pascal

That was it, I am pretty new to rhino so if came across a lot of issues but thank you for helping me out.

-Fosse

Hi Fosse - see

lots of good stuff there.

-Pascal