Can you have more than 100 Armour / Health

Use SetPlayerMaxArmour and SetEntityMaxHealth.

// 0x77DFCCF5948B8C71 0xC6C3C53B
// SetPlayerMaxArmour
void SET_PLAYER_MAX_ARMOUR(Player player, int value);

Default is 100. Use player id and not ped id. For instance: PLAYER::SET_PLAYER_MAX_ARMOUR(PLAYER::PLAYER_ID(), 100); // main_persistent.ct4

// 0x166E7CF68597D8B5 0x96F84DF8
// SetEntityMaxHealth
void SET_ENTITY_MAX_HEALTH(Entity entity, int value);

For instance:
ENTITY::SET_ENTITY_MAX_HEALTH(PLAYER::PLAYER_PED_ID(), 200); // director_mode.c4: 67849