Creating a launcher icon for sublime text 3 with the Exec=sublime_text instead of long path with shortcut icon retained in launcher

Question

I created a shortcut for sublime text 3 (sublime_text.desktop)[The file with the good looking icon] and this happened,

The code i used in sublime_text.desktop

#!/usr/bin/env xdg-open
[Desktop Entry]
Encoding=UTF-8
Type=Application
Name=Sublime Text
Comment=Sophisticated text editor for code, markup and prose
Icon=sublime-text
Exec=./sublime_text
Terminal=true
Categories=Development;IDE;

I've used many similar examples but didnt work(and yes double clicking sublime_text executable works).

Answer 1

I don't think that this will work:

Exec=./sublime_text

Use full path instead.

Exec=/full/path/to/sublime_text

To make it work with ./sublime_text you need to have .desktop file and executable file in the same current working directory (.)

If yet does not open, then check for permission issues. When you call the .desktop file with a double click or from your DE apps menu then the .desktop file is executed as user.
If the folder you have your executable file is a root folder, execution will fail due to missing priveleges.
Users can not run root progs, unless the permissions have been set to apply such operation (allow execution by others).