Initialisation of array or matrix in embedded matlab function block

Hello all, I want to store the data of my simulation into a matrix so that I can later use it.All this i am doing in embedded matlab function block. Can any one tell me how to initialize the array or matrix in the embedded function which can be updated in each iteration of simulation. Any other solution to my problem will also be appreciated.

[Fangjun Jiang]

Any particular reason that you have to do it using embedded matlab function? To store data, it's easy to use To Workspace block or To File block.