JMS Consumer ActiveMQ

Hello, I need help configuring JMS Consumer to consumer an ActiveMQ queue.

I am stuck at the validating account part.

Connection Factory: org.apache.archivemq.jndi.ActiveMQInitialContextFactory
I’ve added the JAR & populated:
InitialContext.INITIAL_CONTEXT_FACTORY
InitialContext.PROVIDER_URL
Context.SECURITY_PRINCIPAL
Context.SECURITY_CREDENTIALS

I get this error when validating:

Failed to validate account: activemq is undefined. (Reason: activemq is undefined.; Resolution: Check the spelling of the variable)