How do I create a shared data between two S-functions block using CMEX

Hello there,

I am trying to implement a socket client with the help of two S-function block with a MEX file. One S-function block is conected to my Simulink controller (direct feedtrough) and the second s-function receive the data from the socket server. I have tried with the PWork vector but unfortunately whenever I run the model MATLAB just crash. is there any other way to create a global data for the two S-functions block?

Many thanks