Registry context menu, pass multiple files issue

Hi, this problem is driving me nuts.

Every time I select more than one file>Context Menu>Select my context entry, it opens one instance for each file selected

How do I pass all the select files as parameters?

This guy had the same problem (see the given example 2)

I think it is somehow related to this https://msdn.microsoft.com/en-us/library/windows/desktop/hh127436(v=vs.85).aspxbut I can't find a way to make it work

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My registry keys:

to add them:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\*\shell\TESTING]
@="TESTING"

[HKEY_CLASSES_ROOT\*\shell\TESTING\command]
@="cmd /c echo %1 %*&pause"

to remove it:

Windows Registry Editor Version 5.00

[-HKEY_CLASSES_ROOT\*\shell\TESTING]

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If you select multiple files, right click and click in "TESTING" you will see it opens one instance for each file :s

EDIT: I also tried this

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\*\shell\TESTING]
@="TESTING"
"Position"="Top"
"MultiSelectModel"="Player"

[HKEY_CLASSES_ROOT\*\shell\TESTING\command]
@="cmd /c echo %L&pause"