[pdal] Filters.Crop "where" parameter issue

[Robert Plant]

Hi Guys,

I wasn't sure if this was a bug or me just using the where parameter in
Filters.Crop incorrectly so I thought this might be the best place to post
my problem.

I am using PDAL version 2.1.0 taken from Conda

I'm trying to use Filters.Crop to crop an extruded polygon in 3D space, I
thought I could use the polygon parameter to define a 2D polygon in XY
space and use the where parameter to ignore points that are outside my
defined Z values.

My problem is that I get this error message: PDAL: filters.crop: Unexpected
argument 'where'.

I am using a pipeline which I'll paste below, any thoughts on what is going
wrong?

Kind Regards,
Rob

{
  "pipeline": [
    {
      "filename": "C:/Users/robert.plant/Documents/Testing/Scan5.csv",
      "header": "X,Y,Z",
      "type": "readers.text"
    },
    {
      "polygon": "POLYGON((-19.7748222351074
15.8164501190186,48.7325973510742 15.8164501190186,48.7325973510742
54.9158058166504,-19.7748222351074 54.9158058166504,-19.7748222351074
15.8164501190186))",
      "outside": false,
      "type": "filters.crop",
 "where": "(Z > -33 || Z < -60)"
    },
    {
      "type": "writers.las",
      "filename":
"C:\\Users\\robert.plant\\Documents\\Testing\\CroppedScan5.las",
      "compression": "none"
    }
  ]
}
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