How to use c++ API to get the custom stencil in post opaque stage？

Development Programming & Scripting
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1

My goal is to use custom stencil in my compute shader

I have used below functions to fill the custom stencil，and i can see it in editor with custom stencil buffer mode，

MeshComp->SetRenderCustomDepth(true);
MeshComp->SetCustomDepthStencilValue(ID); // this is my custom data
MeshComp->MarkRenderStateDirty();

but i don’t know how to get it in post opaque hook function like this：

void UNeuralLightmapEditorSubsystem::ExecuteRenderPass(FPostOpaqueRenderParameters& Parameters)

i have test many ways，such as：

FRDGTextureRef DepthStencilRDG = Parameters.DepthTexture;
FRDGTextureSRVDesc StencilSRVDesc = FRDGTextureSRVDesc::CreateWithPixelFormat(DepthStencilRDG, PF_X24_G8);

this get all black in renderdoc when i open the input pannel

and any other ways i get from gemini and unreal official chatbot，no one works

So What is the officially recommended, stable method in UE 5.3+ for a non-engine module (plugin) to safely acquire the FRDGTextureRef of the Custom Depth/Stencil buffer when executing a Compute Shader during the PostOpaque rendering phase?

Thank you!