ios - Overwriting file with DropboxSDK -

i'm using dropboxsdk (core api). upload file function:

- (void)uploadfile {      [[self restclient] loadmetadata:@"/myfolder"]; }  - (void)restclient:(dbrestclient *)client loadedmetadata:(dbmetadata *)metadata {      if (metadata.isdirectory) {         if (metadata.contents.count == 0) {             nsstring *filename = @"file.txt";             nsarray *documentpaths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);             nsstring *documentsdir = [documentpaths objectatindex:0];             nsstring *databasepath = [documentsdir stringbyappendingpathcomponent:filename];             nsstring *destdir = @"/myfolder";             [[self restclient] uploadfile:filename topath:destdir withparentrev:nil frompath:databasepath];         } else {             (dbmetadata *file in metadata.contents) {                 [self overwritefile:metadata];             }         }     } } 

i try overwrite file "file.txt" function, doesn't work.

- (void)overwritefile:(dbmetadata*)meta {      nsstring *filename = @"file.txt";     nsarray *documentpaths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);     nsstring *documentsdir = [documentpaths objectatindex:0];     nsstring *databasepath = [documentsdir stringbyappendingpathcomponent:filename];     [[self restclient] uploadfile:filename topath:meta.path withparentrev:meta.rev frompath:databasepath]; } 

call delegate:

- (void)restclient:(dbrestclient *)client uploadedfile:(nsstring *)destpath from:(nsstring *)srcpath metadata:(dbmetadata *)metadata {      nslog(@"file uploaded path: %@", metadata.path); } 

and show in log: file uploaded path: /myfolder/file.txt. go dropbox , see, date of file doesn't change.

what wrong? can me?

note uploadfile uploads file named filename within path topath. looks me you're trying upload /myfolder/file.txt/file.txt. make sure topath folder want write file file.txt.