Check if strength increased, If it increased then increase Health by 20

I don’t have the blueprint yet. I am still solving it by writing it in a paper.

Like in dota bro. When a hero leveled up It gains 2 strength, 1 agility, 2 intelligence. Each of these attributes provides the hero an increase on health, mana, and attack speed depending on the increased attribute. In this case I want my character to get 20 health when my character level up it gets 1 strength, and 1 intelligence yields 10 mana. What I want is give my character 20 health every time it gets 1 strength from leveling up.