Windows 7 + .bat file on a NAS : doesn't work

Hi, I have a NAS (synology) and windows 7 computers. I can acces in share folder in my Filestation, all is fine. The BIG problem is : i can not execute .bat file on this share folder. It is a big problem. If i create a share folder on a Windows 7, .bat files work. On the Filestation : doesn't work. I change the Network security: LAN manager authentication level to Send LM & NTLM responses, disable UAC, add the share folder in the "Trusted Network", etc etc .... doesn't work. Please help. Thank.

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