Sorry, your question is not very clear to me. Could you explain why the 'From File' and 'From Workspace' blocks didn't work - if there was an error, please specify the error message.
Have you tried using Constant blocks since it appears your variables have constant values?
It's also not clear if these variables acts as inputs to the Embedded MATLAB Fcn blocks, or if they just need to be parameters. If they are parameters, you don't need to import them as signals into your models, just create parameter data on the Embedded MATLAB Function block with the same names as the workspace variables. Simulink will resolve the variables automatically in the workspace.