How can I use a user-defined MATLAB class as a Simulink signal datatype?

I would like to use a user-defined MATLAB class as the datatype for a Simulink signal. I have tried just entering the MATLAB class name into the "Data Type" field for the Simulink signal in the Model Explorer, but when starting the simulation I get the error "DataType 'ClassName' did not resolve to a valid data type".

Answer 1

[Kaustubha Govind]

Please see this previously answered question on the only available mechanisms to create user-defined types in Simulink.