Receiving information with TCPIP object

Greetings, I have written a script to receive an array of numbers from another computer with a TCPIP object, I'm doing so with an event function handler. Here's my code:

t = tcpip('0.0.0.0',30000,'NetworkRole','server');

t.BytesAvailableFcnCount = 20;

t.BytesAvailableFcnMode = 'byte';

t.BytesAvailableFcn = @received;

fopen(t)

and here's the "received" function:

function X=received(t,A)

X=fread(t,t.bytesavailable/4,'float')

end

The information is received without errors, but for some reason the number array I receive is not stored in the "X" variable or anywhere, I have no idea what the problem could be. Can any of you help me with this issue?