How to localize autorun.inf?

Question

Has anyone successfully created a single page autorun.inf file? The documentation for *.inf files would suggest that

[autorun] 
open="MyApp.exe"
icon=MyApp.exe,0
label=%AppLabel%
action=%AppAction%
[Strings]
AppLabel = "My test app"
AppAction = "Start my test app"
[Strings.0407]  ; 0407 is the language ID for German
AppLabel = "German my test app"
AppAction = "German start my test app"

should work. I find that label (as it appears in the Autorun dialog) shows '%AppLabel%' rather than the expected 'My test app'.

Any ideas? Thanks in advance.