The game switches between double and u64. When a value is actively changing, it uses double — for example, after you take damage, your HP becomes a double. Before that, it appears as u64.
Use Breeze's Watch ASM function (default shortcut ZR + B) to monitor the value, and use manual editing to hack this game.
For most values, you need to press + to display the numbers so Breeze can capture them. You’ll need to see the number anyway to recognize where it is located.