The tag name dictionary can be modified directly, but it should be noted that the tag type cannot be modified. For example, IO real type can be changed to memory real type, but it cannot be changed to memory discrete type.

If it can't be changed, in the case of gray, you can try the following methods: close all beds, especially-update the number of uses. Then change it.

If you want to modify the tag type, you need to delete all scripts or pictures related to this tag from the project, then update the usage count, delete the unused tags and re-create.