Hello and thanks for your reply.
Health variable is a local one, in the player, so no global i 'm afraid.
If i can do what you say with local, then could you please expand a bit?
try this
"By default, local variables reset to their initial value whenever entering their scope (usually every tick), like local variables in programming languages. If the variable is marked static in the Event Variable dialog it will persist its value permanently, like a global variable."