[Gate-users] Why can't I set the parameters of the world in Gate by myself?

[zhaocyjackie at sina.com]

 Hi, I am a newcomer of Gate. I found a weird phenomenon that I can't set the parameters of world including side lengths and material of the world by myself. For example, I adjust the world XYZ length to 1000mm, and set the translation of a daughter of the world is (500,0,0)mm. When I run the simulation, it will be terminated and there will be a notification that the size of daughter is beyond the dimension of mother. More over, once I set these parameter, the window of OGLSX will become grey. I will appreciate if anyone can help me, thanks a lot!
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