CMEX output matrix on simulink

Hello actually i'm working on developing Recursive least square method on S function for online identification. First i want to check on simulink. when Writing in .m to C file , i used a lot of matrix multiplication and the result comes out in a 2*2 matrix. I want to know how i show this output 2*2 matrix value on simulink from CMEX file, which function i need to use in C file and also what block in simulink. I used a pointer *y to get an output port signal in CMEX file.That's why when i tried to use y with output matrix it give error because of pointer. How we can store 2*2 matrix value in a pointer and then look in Simulink block or transfer these values in workspace? If some has knowledge then please guide me Thank you so much