Gradient in diameter with Multipipe

I would like to multipipe these curves. I want the size of the diameters to be in a gradient. I want the curves at the top to have a smaller diameter and the ones at the bottom to be bigger. I want the diameter to change with points as attractors. Right now I have the diameter changes with the distance between the two points but it not a gradient in diameter.

Moved to Grasshopper category

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This is just a guess: (8.7 KB)

I can’t get multipipe to be strict with it’s sizes. I used loft instead.
pipe (13.8 KB)