I have moved you post as it is not a discussion about Archicad (Archicad+).
I don't know what your units of measurement are.
4.0 could be 4 metres.
Try changing this to 0.01 (10 millimetres).
The smaller this value, the closer the curve will match - but the more nodes you will have as well.
One of the forum moderators.
Versions 6.5 to 25
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