Saving work space with a name from a variable

I want to save all the variables of the work space, with the name from variable.

I've tried using

filename = test.value;
save (filename)

Answer 1

[Image Analyst]

Try this:

filename = sprintf('%s.mat', test.value); % where test.value is a string variable.
save(filename);

Answer 2

[Walter Roberson]

save(filename)

[RANJITH REDDY KALLURI]

@Walter Roberson tried that, command works with no error. But .mat file is not created