Problem with PolyCurve.ByJoinedCurves input in Dynamo

Hello,
I’m facing an issue with the PolyCurve.ByJoinedCurves node in Dynamo.

I’m getting this error:
PolyCurve.ByJoinedCurves expects:
(Autodesk.DesignScript.Geometry.Curve, double, bool, double)

But was called with:
(Function, double, bool, double)

It seems like I’m passing the wrong input into the curves port.
Could you help me understand how to properly prepare the curves list?
Any guidance would be appreciated!

Whatever your input is for ‘curves’ isn’t yet producing any curves, likely as you have not provided one of the necessary inputs to it yet.

Can you share an image of your graph?

i don’t know why i cant share images or videos!!

download it from this link please