Hello there, I can see that for the Java OpenID adapter [1] this is possible via env prefix, e.g. ${env.MY_ENVIRONMENT_VARIABLE} In the other hand for the SAML one [2] only system properties are allowed. Would it be feasible to implement it? Do you think that it would be worth to open a feature request for this [3]? Thanks in advance, Luis [1] https://www.keycloak.org/docs/latest/securing_apps/index.html#_java_adapt... [2] https://www.keycloak.org/docs/latest/securing_apps/index.html#_saml-gener... [3] https://issues.jboss.org/browse/KEYCLOAK -- "Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better." - Samuel Beckett