How can I see the state machine name in the waveform simulation?

Hello

I use MAX PLUS II student's version. If I have something like this in my vhd source code:

TYPE state IS (s0,s1,s2,s3);

SIGNAL present: state;

The question is: How can I see the name of the state machine in the waveform editor instead the hexadecimal number?

In the waveform editor I have:

1s 2s 3s 4s

present 0 1 2 3

And I want:

1s 2s 3s 4s

present s0 s1 s2 s3

What can I do?

Thank you.