How to switch the direction of the tween in pufferfish tween on surface

I have made two curves on a surface and want to tween between them using pufferfish twin on surface component . The tween works but I want to switch the direction as shown by the arrows indicated in black . Any suggestions?

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Pufferfish doubt.gh (16.3 KB)

Looks like the surface is a result of a loft. The seam of your surface is between the curves you’re trying to tween, so it will never tween that way. Adjust the seam of your curves prior to lofting so that the lofted surface seam is not in the region you want your curves tweened through.

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Thakyou for responding . That works !