SpeedHacker report error, help me

float SpeedOld[1776];
void backupvalue()
{
	for (int i = 0; i <= 1776; i++)
	{
		DWORD Weapon = (DWORD) (pWeaponMgr + (4 * i));
		
		if (Weapon != 0)
		{
			SpeedOld[i] = *(float*) (Weapon + MoveSpeedPenalty);
		}
	}
}

void SpeedHacker()
{
	for (int i = 0; i <= 1776; i++)
	{
		DWORD Weapon = (DWORD) (pWeaponMgr + (4 * i));
		
		if (GetAsyncKeyState(VK_SHIFT))
			Weapon = ! Weapon;
		if (Weapon != 0)
                                 if (GetAsyncKeyState(VK_SHIFT))
				*(float*) (Weapon + MoveSpeedPenalty) = -0.2f;
			else
				*(float*) (Weapon + MoveSpeedPenalty) = SpeedOld[i];
	}
}