How do I save a file so it will still operate as a matlab sheet when opened?

WHen I save and open Matlab files, the matrices are still there, but the spreadsheet is dead. It won't display values properly. How do I save and open to keep the matrices and history live?

[Ritesh Chandna]

Provide more information about your workflow. What do you mean by 'spreadsheet is dead'?

Are you talking about .mat files in which matrices are still there?

[Walter Roberson]

A screenshot would help.