emissive material with ray tracing global illumination

hello guys for a project i am working on i need to use emissive material as a real light emitter…(for creating led panel that also light the area)… i think this would be the way Working emissive materials in RTGI (with screenshots) - Rendering - Unreal Engine Forums as i am using raytracing too in my project … unfortunately the provided shader that enable emissive lighting in rt global illumination is not working with ue 4.26 and i got compilation error when i open unreal… can anybody help me? i tried also with light propagation volume but they dont work probably due to incompatibility with ray tracing… thanks in advance