I try to ask you..
I did tried randomize resulted: right-X/left-X/up-Y/down-Y
but it's not work up-Z/down-Z..
I want to use random up-Z/down-Z..... only
how do I will do? it's missing?
sorry for my poor English..
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Note: I assume you want to randomize the vertex positions of a mesh object.
One solution, that will work on any mesh is to use the 'Displace' modifier.
Alternatively, you can use the 'Randomize' Mesh editing tool if all your normals are on ±Z (e.g. a grid). To do this, make sure that you set the 'normal' option to 1.0 (boxed on the image below).