Hi, I'm writing a custom appender that has a configuration similar to:

<appender name  = "myAppender" class = "com.my.Appender">
    <config class="com.my.Config">
        <capacity>128</capacity>
    </config>
</appender>

When I test it, I have the following error:

20:19:40,527 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter@41:32 - no applicable action for [capacity], current ElementPath  is [[configuration][appender][config][capacity]]

So config is properly handled whereas nested properties are not, how can I enable it?

Thank you,
Luca