S function for 2 D look up Table, Similar to "sfix_look1_dyn.mex32"

I need some information about "sfix_look1_dyn.mex32" file. Currently I am using this mex file, with the help of masked s function block. I am using this block only for 1 D look up related calculations. But if I want to use similar kind of logic for 2 D Look up table then is it possible to use same mex file ? Basically I want to know is there any way out so that, for 2 D lookup I can give values of Table Data as Inputs.