YAML DSL DoTry does not work

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.language.GroovyExpression;

public class Test extends RouteBuilder {
    @Override
    public void configure() throws Exception {

        from("timer:demo")
                .doTry()
                    .setBody(new GroovyExpression("100/10"))
                .doCatch(ArithmeticException.class)
                    .log("Exception")
                .doFinally()
                    .log("${body}");    
    }
}

 - route:
    from:
      uri: timer:demo
      steps:
        - doTry:
            steps:
              - setBody:
                  expression:
                    groovy:
                      expression: 1000 / 0
            doCatch:
              - steps:
                  - log:
                      message: Exception
                exception:
                  - java.lang.ArithmeticException
            doFinally:
                steps:
                  - log:
                      message: ${body}