That command looks correct and works fine in a button, but not in the drag & drop event, so it looks like @ifpath doesn't work with drag & drop right now.
Ok, than this should be a feature request. @Leo: Could you give a hint how the current feature request process works? As far as I remember in the past the support form could be used for feature requests, but now the support info just directs me to the forum.
You don't need to do anything special anymore, just post ideas to the forum from a linked account (as you've done) and they're considered proper feature requests now.