Not able to store non-ascii Characters in Aerospike cache

Hi I am not able to store french characters (non-ascii) in aerospike cache. Do i need to do some configuration for that? As of now I am storing by string : “special characters Ç é â, ê, î, ô, û, à, è, ù ë, ï, ü test01234” and when i fetch the values it comes like : “special characters

.� � �, �, �, �, �, �, �, � �, �, � test01234”

Which encoding are these characters? Which client are you using?

The server isn’t changing the characters, but our clients normally assume UTF8 encoding.