Whenever using almost any of the examples, the duration is too short.
When adjusting the skillbar in particular, it doesn't seem to have any effect. The bar is full as soon as it loads and the player fails.
exports['SN-Hacking']:SkillBar(3000, 10, 2) is the same as exports['SN-Hacking']:SkillBar(60000, 10, 2) - no difference.