Structure block can't copy between worlds (Bedrock edition windows 10)

I've built this tall skyscraper in my world, and I want to copy it with the structure block into my friend's Minecraft world, but I don't have access to my friend's world's files, because me and my friend live very far apart, but the structure block doesn't allow me to copy builds between worlds, without messing with the files of the world. Please make it so that you can copy buildings with the structure block between worlds, without needing to mess around with the files of the world.