HOOK hookTrigger() {
	__asm {
		push eax; //<---- Change 1, backup eax
		push eax; //<---- Change 2, use eax instead of [eax]
	call onTrigger;
		pop eax;
		pop eax;
	push 0x405d4c; //<---- Change 5, return address
	retn;
	}
}

//It may seem useless to push and pop eax twice, but its the best way to preserve it