As said in your other topic (where I also answered your other question), you need to use a Store Grid Cells node and set the Store Cells setting to Path to create a path. Usually, you'd use the Move Command for selecting a cell to move to (which handles creating the path), but if you want to do that within an attack, you need to create that path manually with the Store Grid Cells node and use the created path afterwards in the Set Grid Path node to set the action's path.
Once this is done, you can use the tutorial example events for the move command to move along the action's path.
