Cheat Engine

[Jad]

Hello ... I have minimal knowledge regarding cheat engine so I checked the tutorials and this forum but there is no explanation regarding this issue.

I want to find the health value (represented by a bar in game). I found it as a float but now i want to find its base address.
My example address would be this: 0x02ACF574 that holds the health value
So i right clicked it and "find out what writes to this address"
And I always get this: 0045CEF5 - fstp dword ptr [esi+ecx*4]
exc seems to always be 0 so i can neglect the offset
but esi always has the value of my found address (0x02ACF574)

So what do I do from here ?
If I hex search for 02ACF574 most of the times there are no results but when there are (1-3) every one that I manually add and make a pointer only holds the health value for a minute or so then its invalid (???)
If while it holds the value i do a "what accesses this address" or "what writes to this address" even if I change the health value in game (heal or receive damage) i get no asm code.

Can someone clarify please ?