Health System Not Working

I am building a game which includes a Health System and my problem is as follows:

When the game starts InitHealth gets set to 100
Character walks over “Fire” and takes damage while in the fire
HERE IS WHERE THE PROBLEM STARTS when Client 1 walks over the “Fire” Client 1’s heath drops, BUT when Client 2 walks over the “Fire” It takes heath from Client 1 not Client 2

Max Health - Float - Replicated
Current Health - Float - Replicated

Take Damage (pictured)

What am I doing wrong?
If you have any questions please ask!