Rocket Launcher Crossbow

Hello, it's Jofus16!
With command blocks, I've managed to make a fully functional crossbow rocket launcher!
To get into your game:
1. Download the file, which is a .mcstructure file.
2. Get out a structure block. This is unobtainable in the creative mode inventory or survival mode crafting, and you must use:

"/give @s structure_block"
3. Place a structure block, and set the mode to "Load".
4. Press import, and select the .mcstrcutrue file. Finnally, press the load button or power it by redstone.