[SailfishDevel] Setting App Priority In sailfish

[neotericdeveloper at gmail.com]

Ahoy Sailors.
I am Asker.
 I am a completely new to sailfish(linux) os app development. Is it posisible to set app priority for an app.

 Consider App AA has mime type text/plain and app BB has also same mime type text/plain.   If app AA is installed first followed by app BB, whenever plainText file is clicked from filemanager only app BB is opened. How can i make to open App AA always regardless how many apps with same mime type is installed there after.

Any help. 
Thanks in advance.