ldap module and expiration

Hi, I'm using freeradius 3.0.13 and I'm using it with openldap. I'm already mapped the ldap attributes, but unfortunately, I have radiusExpiration saved in ldap with double quotes and doesn't match the format that accepts. I have searched in this list and google how to strip first and last char of radiusExpire variable without result. Anyone knows how to do it? Error: (669) LDAP_A: WARNING: Failed parsing value "\"02 apr 2019\"" for attribute Expiration: failed to parse time string ""02 apr 2019"" /etc/raddb/mods-enabled/ldap ... update { ...                       control:Expiration              := 'radiusExpiration' .... } Thanks.