Protodash Array Size

The following does not work:

explainer.explain(X= [500,000,:64], Y= [50,000,:64], m=60,000 ) 

ValueError: all the input array dimensions for the concatenation axis must match exactly, but along dimension 0, the array at index 0 has size 3545 and the array at index 1 has size 3544

If we purely want to select from X I don't see why when m>Y.shape[0], there should be a problem?

Also in the heloc example, you take S from Y, how does that makes sense with the above description.

Also if I had the ordering wrong, I also switched them around to no effect,

explainer.explain(X= [50,000,:64]  , Y= [500,000,:64], m=60,000 ) 

    273                 [newCurrOptw, value] = runOptimiser(currK, curru, currOptw, maxGradient)
--> 274                 newCurrSetValue = -value
    275 
    276         currOptw = newCurrOptw

TypeError: bad operand type for unary -: 'NoneType'

Here is a reproducible example to play with - maybe about 5 mins to run. (reset kernel after installs)

https://colab.research.google.com/drive/1FdafzzZku0RgJEk7Zf_rJ1lLuciRF0YD

Thanks.

Start with the linked Colab reproducible example and run both explainer.explain calls shown in the issue. Trace the array concatenation error and the NoneType failure from the reported stack trace, then compare them with the heloc example's use of S. Done means the reported inputs behave consistently with the documented X, Y, and m semantics.