I don't have permission

Hello, when I wanna download java classes from code generator I get this error:
You don’t have a permission for ‘Download file’ operation
Which permission should I get?

Hi, Saeed.
Please, provide your AppId.

 my APPLICATION ID IS           "29824712-F959-83C4-FF23-D63DC624D500"

It looks strange. According to the permission everything should be fine. Could you try to upload/download some file manually to/from the file service ?

now it Corrected

Ok. Glad to hear.