In order to get the file from file storage please use file/get :
svc=file/get¶ms={"itemId":<long>, "storageType":<uint>, "path":<text>, "format":<uint>}
| Param | Description | 
|---|---|
| itemId | element id | 
| storageType |  storage type: 1 - public(all users may see/download files ), 2 - protected (that users may see/down- load files who being grant rights)  | 
	
| path | relative path from root folder to the file | 
| format | for .ddd files, get file in VDO format (“format”:1) | 
Returns the file.
If there is no file according to path specified then:
Invalid input{"error":3}
  |