[kh99]

There is a javascript function in file clientscript/vbulletin_quick_edit.js which builds the reply data when the Save button is pressed. I believe you would need to change that javascript to get your value to be submitted. It's this function:

vB_AJAX_QuickEditor.prototype.save=function(B){
    var C=vB_Editor[vB_QuickEditor.editorid].get_editor_contents();
    var A=vB_Editor[vB_QuickEditor.editorid];
    if(C==vB_QuickEditor.unchanged&&A==vB_QuickEditor.unchanged_reason){
        vB_QuickEditor.abort(B)
        }else{
        fetch_object(vB_QuickEditor.editorid+"_posting_msg").style.display="";
        document.body.style.cursor="wait";
        pc_obj=fetch_object("postcount"+vB_QuickEditor.postid);
        this.ajax_req=YAHOO.util.Connect.asyncRequest("POST","editpost.php?do=updatepost&postid="+this.postid,{
            success:vB_QuickEditor.update,
            failure:vB_QuickEditor.handle_save_error,
            timeout:vB_Default_Timeout,
            scope:vB_QuickEditor
        },SESSIONURL+"securitytoken="+SECURITYTOKEN+"&do=updatepost&ajax=1&postid="+vB_QuickEditor.postid+"&wysiwyg="+vB_Editor[vB_QuickEditor.editorid].wysiwyg_mode+"&message="+PHP.urlencode(C)+"&reason="+PHP.urlencode(fetch_object(vB_QuickEditor.editorid+"_edit_reason").value)+(pc_obj!=null?"&postcount="+PHP.urlencode(pc_obj.name):""));
        vB_QuickEditor.pending=true
        }
    };

and I think right after +PHP.urlencode(pc_obj.name) you'd need to add

+"&modnotice=thisvalue"

unfortunately the spaces have been removed from the js files, so you either have to find it in the very long line of code or else use a program that reformats the js source.