How do I define DATETIME precision in a MySQL 5.6 model?

I added a custom data type of DATETIME(3) to the Datatype Mapping Editor but it doesn't show up in my model as an option for a data type when editing a column.

  • I do have a similar problem in version 16.5. Created custom data type in the Datatype Mapping Editor but the custom data type is not available when selecting a data type on an entity in the logical model. In the model options there is an "Update Datatype Mapping' button but it does nothing. Additionally the documentation does not match the dialog boxes.

    How can custom data types be used?