How I use UILocalized with dynamic text

[NJ_kung]

I use it on button / static text it work great.

Now I try on Error popup on login page. (Too short password/too short username / blah blah blah)

I create one popup(sliced sprite + label) and change label.text

How I use UILocalized on it ?

Or may me I must create custom class from UILocalized 

[ArenMook]

UILabel.text = Localization.instance.Get(yourKey)

[NJ_kung]

Yeah for ans 

but before you ans and I have try on

UILocalize mLocal;
mLocal = GetComponent<UILocalize>();
mLocal.key = key;
mLocal.Localize();

[jeldrez]

UILabel.text = Localization.instance.Get(yourKey)

Doesn't recognize the key, it gives me an error: The name 'LabelKey' Does not exist in the current context.

Thanks