In the picture, I want to Insert the Z value into the list on the left.
Is there a way to modify the value in the point?
Hi,
You can use Point.ByCoordinates.
The X and Y inputs would be the values you already have (you can extract them via the Point.X and Point.Y nodes), and the Z input are the list you have at your left.
Hi just do this
But be aware that X and Y list need to be the same length as Z list.
Sorry, I just didn’t explain the problem clearly.
Like this 
Thanks~