Is there a way to store a handle (COM.application) into a memory block?

In Simulink, I want to be able to open a COM server, keep the variable handle stored so it can be called in other iterations, then, during the last iteration, close and delete the handle.

I can open, call, and delete the handle per iteration, but that eats up too much time. I need to be able to store the variable (handle), but I do not know if it is possible. Any help?