Define "current note" with action code

[eastgate]

@webline

var:list allMyNotes     = collect(children(startNode),$IDString);
if(!allMyNotes.empty){
   allMyNotes.each(singleNote){
      singleNote.unlinkFrom(all,"agree");
   };
};

1. You do need to test that allMyNotes is empty, since .each(){ … } will do nothing if its list is empty. So now we have

var:list allMyNotes     = collect(children(startNode),$IDString);
allMyNotes.each(singleNote){
     singleNote.unlinkFrom(all,"agree");
};

2. The unlink and link operators accept group designators, so you could avoid the explicit loop:

unlinkFrom(children,"agree");

3. For a rule, this is bound to the note that owns the rule. If you want some other note to be this, you use eval():

eval(/path/to/note,"unlinkFrom(all,'agree')" );