Thanks for contacting us. Though there are no inputs in the generator for the ends of the X Evenly rows, it is possible to target them using some simple conditional operations. In the style shown below I've used a selector operator and an expression to use a different segment based on the position along the Y Spline.
The selector operator (1) includes the segment used for the start, mid, and end of the column. Export the Index and then plug in an Arithmetic operator (2). The expression uses two If
functions, one inside the other : if(YSplinePosition<0.05,1,if(YSplinePosition>0.95,2,3)) which is checking to see if the current segment is either near the beginning of the spline, in which case it will return the segment in index 1, or near the end, in which case it return index 2. If it's neither of those, it will return index 3. This works particularly well when a top and bottom row is also being used. Note that it may be necessary to adjust the conditional values depending on the typical height range, or alternatively it could be calculated dynamically by calculating the ratio of the segments height to the current length of the Y Spline (For simplicity I haven't shown this).
This same technique should also work in a corner input too.
I've attached this style for you to have a look at.
Hopefully that helps out, please let me know if you have further questions.