How to include library in engine source?

Development Programming & Scripting
1

Hi, I want to use the Magnification API from microsoft in engine source not project source so I need to include magnification.h but I think I also need the .lib and .dll files. I added Magnification folder in Source/ThirdParty and I added Magnification.build.cs with the following code

using UnrealBuildTool;

public class Magnification : ModuleRules
{
    public Magnification(ReadOnlyTargetRules Target) : base(Target)

    {
        Type = ModuleType.External;

        string MagnificationPath = Target.UEThirdPartySourceDirectory + "Magnification/Magnification";

        string MagnificationIncludePath = MagnificationPath;
        PublicSystemIncludePaths.Add(MagnificationIncludePath + "Win64"); // PublicSystemIncludePaths is for "stable" headers that don't change

        string MagnificationLibPath = MagnificationPath;
        if (Target.Platform == UnrealTargetPlatform.Win64)
        {
            MagnificationLibPath += "Win64";
            PublicLibraryPaths.Add(MagnificationLibPath);

            PublicAdditionalLibraries.Add("magnification.lib");

            PublicDelayLoadDLLs.Add("Magnification.dll");
        }
        else if (Target.Platform == UnrealTargetPlatform.Win32)
        {
            MagnificationLibPath += "Win64";
            PublicLibraryPaths.Add(MagnificationLibPath);

            PublicAdditionalLibraries.Add("magnification.lib");

            PublicDelayLoadDLLs.Add("Magnification.dll");
        }
    }
}`

The problem is that I get unresolved external symbol errors.

I have these files:
Engine\Source\ThirdParty\Magnification\Magnification.build.cs
Engine\Source\ThirdParty\Magnification\Magnification\Win64\magnification.h
Engine\Source\ThirdParty\Magnification\Magnification\Win64\Magnification.dll
Engine\Source\ThirdParty\Magnification\Magnification\Win64\magnification.lib

Thankyou.