How to change tick mark labels in z axis from values to texts?

I am drawing a column chart for the dynamic scales in a music piece. Data
value in the z axis refers to other customary names (texts). For example, 7
represents ff (fortissimo), 6 represents f (forte), 5 for mf (mezzo forte),
etc. I want to show these customary names instead of the values in the
labels. Could anybody teach me how to change these tick mark labels in z axis
from values to texts?

One correction. The labels I want to change is in the Y axis. Thanks.

"Flroa" wrote:

> I am drawing a column chart for the dynamic scales in a music piece. Data
> value in the z axis refers to other customary names (texts). For example, 7
> represents ff (fortissimo), 6 represents f (forte), 5 for mf (mezzo forte),
> etc. I want to show these customary names instead of the values in the
> labels. Could anybody teach me how to change these tick mark labels in z axis
> from values to texts?
>