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Hi all, my challenge is to create a custom button that as folder like behaviour example: -componentName, with a queue Link (Link ) -action_1(Link ) -.... -action_n[Link[n-1]) the goal is when the component was instanciated, two args will be passed: -componentName; -String with the name of each subComponent(Link.caption); The I've created such a class, but when it is called to render, a null exception is thrown... i'll had the code as soon as i can. Anyone knows why this is happening? Pedro