I have python provider of LMI_HostedStorageService association class (association between CIM_OperatingSystem and LMI_StorageService). If I call CIM_OperatingSystem.Associators with Role argument, I get empty result. Investigation shows, that Result argument is compared case-sensitive while it should be case-insensitive.

Version-Release number of selected component (if applicable):
pywbem-0.7.0-7.fc18.noarch

Reproducer (in lmishell):
os=root.Linux_ComputerSystem.first_instance()
os.associators(Role='Antecedent')
>>>returns []
os.associators(Role='antecedent')
>>>returns [_LmiInstance(classname='LMI_StorageConfigurationService', ...)]