Problem in reading data from TCP/IP socket in string format in Simulink.

Hi there. I have an app in my iPhone which is sending the acceleration data with a TCP/IP socket in CSV, string format. I can read and convert data in m-file. But I can not do the same thing in Simulink. My phone is connected but when I connect a DISPLAY or SCOPE block to TCP/IP block, the received data are meaningless. Please help me in this. Thank you