Use 'source' command in a shortcut!

Question

I have to run a bash script GoogleDrive.sh that changes the environment variables of ~/.profile file. In terminal emulator source GoogleDrive.sh works fine, but when I put this command in desktop shortcut it says source is not a command and it is not recognized. How can I run GoogleDrive.sh file with the source command without opening new terminal session? The file GoogleDrive.sh looks like this:

#!/bin/bash

if [ $GOOGLE_DRIVE_ON -eq 0 ]; then
  google-drive-ocamlfuse ~/GoogleDrive
  export GOOGLE_DRIVE_ON=1
  dolphin ~/GoogleDrive
else
  fusermount -u ~/GoogleDrive
  export GOOGLE_DRIVE_ON=0
fi

The global variable in my .profile file is GOOGLE_DRIVE_ON.

The source command runs fine from the terminal emulator, but from a desktop shortcut it is not recognizable.

I use Kali linux.

Answer 1

source isn't a file on UNIX machine. source is a built-in shell command. such as export or shopt.
In deept, in programming world,exec function run a file in your disk. it can't run a built-in shell command.