Get potion name and duration from config?

Hi bukkit comunity, it's me again i want to check in the config if a string, for example called Effects.Weed. if there is a potion name or duration, like this:

Effects:
Weed:
EffectType: SPEED
Duration: '80'
Amplifier: '60'

How can i do this?

 

getConfig().getConfigurationSection().getKeys(); Gives you a list of Weed, and any other custom effects you have and then you can loop through them and add weed to effectType or duration, etc... to figure out all the rest

 

Code:

    p.addPotionEffect(new PotionEffect(PotionEffectType
                                .getByName(plugin.getConfig().getString(
                                        "Efectos.Marihuana.Efecto")), plugin
                                .getConfig().getInt(
                                        "Efectos.Marihuana.Duracion"), plugin
                                .getConfig().getInt(
                                        "Efectos.Marihuana.Amplificador")));

Have tryed whit this, but when the event occurs the consolo says:

What can i do?