@Override public String getProperty(String propertyName) { try { CpsThread t = CpsThread.current(); return EnvironmentExpander.getEffectiveEnvironment(getEnvironment(), t.getContextVariable(EnvVars.class), t.getContextVariable(EnvironmentExpander.class)).get(propertyName); } catch (Exception x) { LOGGER.log(Level.WARNING, null, x); return null; } }