Error creating document -10

Help create a new document.
When i use this construction:

final String path= "/storage/emulated/0/Download/noname.pdf";
Document doc = new Document();
doc.Create(path);

Metod doc.Create(path) return -10.

Help create a new document correctly. Thanks

-10 -> access denied or invalid file path

make sure the path is a valid one...

Check PDFTestAct.onCreate for a working example.

You example PDFTestAct.onCreate is worked, but if i use this activity in my project, i make -10 rezult.
My path and example path is the same. "/sdcard/test.pdf";


AndroidManifest use WRITE_EXTERNAL_STORAGE permission .

I use activeProfessional license.Release: 2.9.11


what else could be the cause of a failed attempt to create a file?

The document creation needs a premium license.

It's working in the demo project, because it's activated with a premium license.