Windows Explorer: Context menu to a especific folder (background)

(This is not a duplicate – I have checked before asking)

Both .reg commands add a custom item entry to a folder context menu:

1. Context menu to folders:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\my custom command]
@="My command name"
"AppliesTo"="C:\\My specific Folder\\"

[HKEY_CLASSES_ROOT\Directory\shell\my custom command\command]
@="cmd.exe /s /k pushd \"%V\""

2. Context menu to folder background (empty area of a folder):

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\Background\shell\my custom command]
@="My command name"
"AppliesTo"="C:\\My specific Folder\\"

[HKEY_CLASSES_ROOT\Directory\Background\shell\my custom command\command]
@="cmd.exe /s /k pushd \"%V\""

The line "AppliesTo"="C:\\My specific Folder\\" set which specific folder the menu entry will appear.

The problem is in (2) it won't accept "AppliesTo"="C:\\My specific Folder\\". If I put that registry value ("AppliesTo") the menu entry won't appear at all.
How do I set a specific folder to (2)?