i'm working with Matlab S-function level 2 and i want to pass Data between functions, for exemple between function Initialize Conditions(block) and function Outputs(block) or function Update(block). I tried with Dwork vector but they can't take dimen

i'm working with Matlab S-function level 2 and i want to pass Data between functions, for exemple between function Initialize Conditions(block) and function Outputs(block) or function Update(block). I tried with Dwork vector but they can't take dimensions of type [m x n]. I'm looking for something like global variable that can share data between all functions in my S-function. I tried with global or persistent but it give me error '' Undefined function or variable ''. Thanks for help