Unicode-file-name uploading problem

Hi,
I’m digging into MODx for my own interest and I have a question about the uploading system. Please help me out with this or just tell me MODx not support at the moment version.

Says, I have some files which named with Chinese, I get TinyMCE and insert some files to my document, i tried to upload anything but not unicode-base and it’s okay, but when i try to upload a simple Chinese file name the error returned was error when uploading. It’s not the size related, i think and check it already.
Is there any idea?

PS: sorry for my poor English. I’ll go over my grammar lesson soon.

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