Sharing a file from Silvertlight WP8.1 to 8.1 WP RT app

[0vZ]

Hello! Could anyone help me with information/link/code sample for this task:
I need to share a file from WP 8.1 Silverlight app and receive this file in WP 8.1 RT app.
There is a way of sharing with file extentions and tokens, I think that's what I need, but I found information only about silverlight, but I can't find info about how to make it in RT apps.