Write/Read to/from AD5933 Chip (Impedance Analyzer) from Matlab

Hey,

I am trying to Write/Read to/from AD5933 Chip (Impedance Analyzer) from Matlab using I2C PROTOCOL.

For beginning I checked if the communication between the computer to the chip is working:

and then I ran it:

why I get an error?
Do I need to write something else instant 'Aardvark' at I2C OBJ?

sincerely,
Aviad