macOS Dialog Variable not Defined?

[ness64]

Hello,
I am new here. I'm sorry if this is a nooby question. I was making a script on AppleScript, but it keeps on telling me the variable is undefined whenever I click on a dialog box button.
Here is the script. The line of question will have an arrow next to it.

tell application "Safari"
	quit
end tell
set app_name to "QuickTime Player"
--do shell script "killall " & app_name
tell application "QuickTime Player"
	activate
	set volume 10
	tell (new movie recording)
		start
		do shell script "say -v trinoids Virus activated"
		set volume 10
		do shell script "say -v trinoids All your Base are belong to us"
		tell application "Finder"
			activate
			repeat 50 times
				make new Finder window
			end repeat
		end tell
		tell application "Safari"
			open location "http://www.youtube.com/watch?v=oHg5SJYRHA0"
			set volume 10
		end tell
		
		display dialog "Virus propagating.
Plan of action?" buttons {"Seek and Destroy Virus", "Self Destruct"}
		stop
	end tell
	set MovieFile to (file of document of front window) as alias
	close front window saving yes
end tell
if the button returned of result is "Self Destruct" then <====
	tell application "System Events" to (sleep) and (stop) and application "Finder"
	move MovieFile to desktop
	set name of MovieFile to "LOL.mov"
else
	set volume 10
	stop and application "Finder"
	move MovieFile to desktop
	set name of MovieFile to "LOL.mov"
	do shell script "say -v zarvox requesting authorisation for M,A,D, weapons strike"
	do shell script "shutdown -h now" with administrator privileges
end if

Thanks!

 

[Red Menace]

The special variable result contains the result of the last operation. You are doing a couple of other things before dealing with the dialog results, so there probably isn't a button returned property in the current result.

If you aren't going to immediately do stuff with the results of a dialog, you should save it to a variable, for example:

set dialogResult to (display dialog "whatever" buttons {"someButton", anotherButton"})
-- other statements
if button returned of dialogResult is "someButton" then
  -- deal with dialog result
end if

 

[ness64]

The special variable result contains the result of the last operation. You are doing a couple of other things before dealing with the dialog results, so there probably isn't a button returned property in the current result.

If you aren't going to immediately do stuff with the results of a dialog, you should save it to a variable, for example:

set dialogResult to (display dialog "whatever" buttons {"someButton", anotherButton"})
-- other statements
if button returned of dialogResult is "someButton" then
  -- deal with dialog result
end if

Thanks! It works so far! However, I've encountered another problem. When I added some code to make the brightness of the screen go to 0, it gives me a stack overflow error. Help? I'll make the line of question red.

tell application "Safari"
	quit
end tell
set app_name to "QuickTime Player"
--do shell script "killall " & app_name
tell application "QuickTime Player"
	activate
	set volume 1
	tell (new movie recording)
		start
		do shell script "say -v trinoids Virus activated"
		set volume 1
		do shell script "say -v trinoids All your Base are belong to us"
		tell application "Finder"
			activate
			repeat 1 times
				make new Finder window
			end repeat
		end tell
		tell application "Safari"
			open location "http://www.youtube.com/watch?v=oHg5SJYRHA0"
			set volume 1
		end tell
		set dialogResult to (display dialog "Virus propagating.
Plan of action?" buttons {"Seek and Destroy Virus", "Self Destruct"})
		stop
	end tell
	set MovieFile to (file of document of front window) as alias
	close front window saving yes
end tell
if the button returned of dialogResult is "Self Destruct" then
	[COLOR="Red"]set name of MovieFile to "LOL.mov"[/COLOR]
	set V to 0
	tell application "System Preferences"
		activate
		set current pane to pane "com.apple.preference.displays"
	end tell
	tell application "System Events"
		tell process "System Preferences"
			tell slider 1 of group 2 of tab group 1 of window 1
				set value to V
			end tell
		end tell
	end tell
	set app_name2 to "Finder"
	--do shell script "killall"& app_name2
	do shell script "say -v LOLOLOLOLOLLOLOLOLOLOLOLOLOL"
else
	set volume 10
	move MovieFile to desktop
	set name of MovieFile to "LOL.mov"
	do shell script "say -v zarvox requesting authorisation for M,A,D, weapons strike"
	do shell script "shutdown -h now" with administrator privileges
end if

 

[Red Menace]

I can't run your script, but you are not going to be able to move or rename files outside of an application tell statement.