is possible change linguots for losted hearts when you are doing a test?
i want to go to next level but i always lost my hearts when i am at the final of the test. I have some linguots but i don't know how change them for new hearts! someone can help me?
you need to buy the heart refill before you are doing the lesson, I believe. Within the lesson you can than choose to use it, or not use it.
You cannot use a heart refill when attempting to test out of a skill. The idea is that if you need a heart refill to test out, you should instead practice more by doing individual lessons.