Data not streaming and can't figure out why.

I am using the Bitalino class toolbox to stream ECG data from a bitalino board and whenever I try to get the data, I end up with an empty vector. I can't figure out why

here's the Bitalino class

https://www.mathworks.com/matlabcentral/fileexchange/53983-bitalino-toolbox

I changed the class so instead of bluetooth, it would work with a ble, becasue the Bitalino can only be recognized as a ble, and commented some things out as they keep giving an error

 %set(obj.BTObject, 'Tag','Bitalino');
                %set(obj.BTObject, 'InputBufferSize',2^16); % This buffer should hold ~8 seconds of data at 1000Hz
                %set(obj.BTObject, 'Terminator','');
                %set(obj.BTObject, 'ByteOrder', 'bigEndian');
                %set(obj.BTObject, 'ObjectVisibility','off');
                %fopen(obj.BTObject);

I keep getting this error:

Error using set

Cannot find 'set' method for ble class

How do I resolve this, I have run out of ideas.

and the code I simply wrote this:

The fopen, write also dont work. I don't know I am not familiar with it. Please help

% Create the object
b = Bitalino;
% Start background acquisition
b.startBackground;
% Pause to acquire data for 20 seconds
pause(20);
% Read the data from the device
data = b.read;
% Stop background acquisition of data
b.stopBackground;
% Clean up the bitalino object
delete(b)