command mkface doesn't rise an exception for invalid parameters for beziercurve

in tests csu/003/B3, csu/003/B4, csu/003/B5, csu/003/B6 command mkface is applyed to beziercurve with such parameters:

   mkface result es_beziercurve_nr_of 0 3 0 30

result shape is wrong, because of too big tolerance of edges and vertexes.
First two parameters of mkface for beziercurve should be between 0 and 1, and here is 3.

So, there is should be an exception.