If the text isn't in the .sma file, where is it then? Clearly you're using a different plugin that has nothing do to with the .sma you provided or the text in the menu is not from the plugin, but from the model.
From what I can see, the plugin is reading the .mdl file itself and extracting the animation names from it, so posting a thread in the AMXX Scripting Help section is not relevant to your issue. But since you're not a noob, you should know that, right?