hi, im trying to make sine curve among vertical curves (the sine shape is set right now as points). I also want that the minimum point of the sine will be at distance of 40 units from the original curve. does someone has any idea how can I do this?

One way to do it would be to find where 40 lies in your domain (0 to 250) and express 40 as a value between 0 and 1 in that domain. So lets call that new value X. Then use that X to define the new range of your domain: X to 1, where 1 is the previously defined max (250) and X is your new minimum (40).