jmx-console fails to pass java.lang.Object values to op invocations

An invocation an op like the org.jboss.security.plugins.JaasSecurityManagerService isValid(String securityDomain, Principal principal, Object credential)
fails to pass the Object paramter because there is no property editor. The code indicates that the input string should just be used, by this value is not being copied to the typedArgs array in the org.jboss.jmx.adaptor.control.Server.invokeOpByName(String, String, String[], String[]) method.