Summary
In Unreal Editor for Fortnite (UEFN), the Custom Node is missing from the Material Editor. Unlike in Unreal Engine 5, where you can use a Custom Node to write HLSL code directly, this feature does not appear in UEFN, making it impossible to use custom shader functions.
Please select what you are reporting on:
Creative
What Type of Bug are you experiencing?
Assets
Steps to Reproduce
Open Unreal Editor for Fortnite (UEFN).
Create a new material or open an existing one.
Right-click inside the Material Graph.
Search for “Custom” to add a Custom Node.
The node does not appear in the list of available options.
Expected Result
The Custom Node should be available in UEFN’s Material Graph, allowing users to write HLSL code for advanced shaders.
Or automatic traduct HLSL to Material Graph
Observed Result
The Custom Node is missing, making it impossible to implement custom HLSL logic inside UEFN materials.
Platform(s)
windows
Island Code
9069-7477-0857
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Additional Notes
I try to recreate my custom node HSLS in material but it was very very hard
I try to recreate sobel matrix with material graph 
Is this an intentional limitation in UEFN, or is it a bug? If this feature is missing, are there any plans to add it in a future update?