Get Scene UniformBuffer

SCOPE:
I’m trying to run custom Vertex/Pixel shader with custom ortho viewport and draw to a RenderTarget

My work is based on RuntimeVirtualTexture, UE_5.3/Engine/Source/Runtime/Renderer/Private/VT/RuntimeVirtualTextureRender.cpp file

ISSUE: reading Scene UniformBuffer

In Vertex/Pixel shader I need to pass a Scene parameter, did copy RuntimeVirtualTextureRender::RenderPages in order to get FSceneUniformBuffer structure

When compiling, reading Scene->GPUScene.FillSceneUniformBuffer(Graph, SceneUB) into FSceneUniformBuffer SceneUB results in unresolved external symbol linker errors:

MyPlugin.Build.cs has PrivateIncludePaths.Add(Path.Combine(EngineDirectory, "Source/Runtime/Renderer/Private")); (where GPUScene.h is at)

Did try SceneUB = UE::FXRenderingUtils::CreateSceneUniformBuffer(GraphBuilder, Scene); but buffer is nullptr

Is there any exposed function for GPUScene so I could get its FSceneUniformBuffer?

Thanks in advance