GoGo isn't accepting a function name with different cases

[Cristiano Gavião]

Hello,

I'm trying to register some commands in GoGo but I'm get problems when
using a method name with uppercase and lowercase:

The service is being registered but the command is being created by gogo.
If I remove the uppercase it handle the function properly.

{org.jbehave.osgi.commands.RunStoriesWithAnnotatedEmbedderRunner}={osgi.command.function=[runAs],
component.name=Command Provider for JBehave Embedder Service, component.id=3,
osgi.command.scope=jbehave, service.id=73}

Is this a bug?

thanks,

Cristiano