The error you are receiving is because the datatypes of the signals in the 'anemoA.mat' file and in the bus definition don't match. By default the data type of the signals in the bus are defined as 'double' (whose dimension is 1), while the signal in the mat file are of type 'timeseries' (dimension [1x1]), hence the error.
This can be fixed by defining the bus elements to be of type 'timeseries'. Here's some documentation and sample code to help you out:
elems(1) = Simulink.BusElement;
elems(1).Name = 'signal';
elems(1).DataType = 'timeseries';
