Hey ! Thx for your answer but I have my TP3 open to my project file and nothing happened. I created a "~/.tpProjectFile" with the url of my TP project file and nothing happened also.
The strange is, when I use "t:addtask" with my TP3 open the command bar show me the name of my project "todo" and when TP3 is closed I have this message "Sorry, no specified files".