SavePlace does not save my bricks. Please help!?

I typed this command into the server:

game:GetService('AssetService'):SavePlaceAsync();

and then there was no error. I left the server and came back & my bricks were gone! Why is this? I have SavePlace Api enabled & CreatePlace as well as HTTP. Please help!

I used the command on the server/place that was CREATED using the CREATEPLACE method. What is wrong? Why doesn't it save the bricks? Is it broken?

Please thanks!