How to automatically synchronize Tiles Entity between the client and the server?

Hello,
I'm working with MCreator on a project containing a block with a GUI linked to it that requires a password to transform one element into another. To check the password, I store it in a NBT, which I compare. Unfortunately, I get this error:
"The entity_nbt_text_get block is not synchronized between the client and server automatically, which means it may not work properly in some cases."
How could I do, either through blocks or code, to synchronize the NBT with the server.
Thanks in advance