Custom key command don't register

hello, I have worked on my key command for some days now and all was fine.
but today some of them doesn’t work.
I was looking in the files, starting over, doing step by step.
I’m into the num pad. and ctrl.
Are there any objections against ctrl ?
In this file - french keyboard (is it that ?) the only thing I changed is add ctrl-num-4 to create a grace note.
I do it. it works. I quit, restart, it doesn’t work.
??
I tried to upload the json file but I can’t.
here’s the text :

question : why is it told “Meta” here ? normally I see “Ctrl”.

/joakim sandgren

{
“common” : {
“contexts” : [

		{
			"context" : "kStepTimeInput",
			"shortcuts" : [
				
				{
					"NoteInput.CreateGraceNote" : [ "Meta+Num+4" ]
				}
			]
		}
	]
},
"delta" : "true",
"version" : "5.1.51"

}

Some Ctrl key combos are used by the System for other things.

“Meta” is for Control on Mac. Different from Ctrl on Windows = ⌘ on Mac.

the file actually uses both. for example :
{
“View.ToggleSuppressSignposts” : [ “Ctrl+Alt+P” ]
},

Ahh…!! so this is Cmd… on mac.
ok,
j