Having trouble with intersection

Hi, newbie here. I am looking to get the curves inside and outside a metaball boundary. I am not sure where things are going wrong, as I get a partial result.

I am trying to do a single curve with “Trim with region” and multiple with “Trim with regions.” If anyone can spot my error, or tell me why this isn’t working I’d appreciate it. Rhino 8, Grasshopper 1.0.0008

Not Working- Multiple curve intersection.gh (19.6 KB)

Your TRIM WITH REGIONS needs a plane input.

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Thanks so much!