[BonnMotion] question about the RPGM 3D model

[吴桐]

i am trying to use the bonnmotion to make some 3D scenario.
but when i use the RPGM and add -x -y -z together the result comes out with
some negative number.
After i convert it into ns2 format i found that all the negative number are
in z axis however the RandomWaypoint model's output is normal.
Could anyone help me with this or the RPGM do not support 3D output at all?
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