Script works in Script Editor, when saved as app, no longer works

Question

I've been playing around with AppleScript trying to learn a little. I wrote an app to fullscreen the current application. First I wrote one to full screen a specific app:
tell application "Safari"
set the bounds of the first window to {0, 0, 1440, 894}
activate
end tell
This worked without any problems and I set a keyboard shortcut to activate it.
Then I decided to make it work for the current app:
tell current application
set the bounds of the first window to {0, 0, 1440, 894}
end tell
When I ran it in Script Editor, it worked fine and set the bounds of the Script Editor window to what I asked. When I save it as an application the same way I did the first app, it doesn't work. I get the error message "Can't set the bounds of window 1 to {0, 0, 1440, 894}." I tried it on the same Script Editor window it worked on when I simply clicked run, but I keep getting the error message.

Answer 1

try something like this saved as an app
tell application "AppleScript Editor"
activate
make new document
set the bounds of the first window to {0, 0, 1440, 894}
make new paragraph at beginning of document 1 with data "hello world"
end tell
tell application "TextEdit"
activate
make new document
set the bounds of the first window to {0, 0, 1440, 894}
make new paragraph at beginning of document 1 with data "hello world"
end tell
Budgie