How do I increase the tessellation limit in UE 4.26.1?

Hi

How do I increase the landscapes tessellation limit in UE 4.26.1 (for Flat Tessellation, not PN Triangles)?

I found these 2 pages offering a way to do it… [HR][/HR]
https://kelheor.space/2017/06/17/tes…n-quality-ue4/

http://oliverm-h.blogspot.com/2014/1…sellation.html [HR][/HR]
…but while I did find the files detailed in the articles, they were not in \Unreal Engine\4.x\Engine\Shaders

but in \Epic Games\UE_4.26\Engine\Shaders\Private, they were .ush files instead of .usf files and moreover their content seems to differ from what was detailed in those 2 posts .

The post says Open: Epic Games\UE_4.X\Engine\Shaders\PNTriangles.usf

Find and change [maxtessfactor(15)] to [maxtessfactor(50)]

and CompositeTessellationFactors = clamp( CompositeTessellationFactors, 1, 15 ); to CompositeTessellationFactors = clamp( CompositeTessellationFactors, 1, 50 );

But these 2 attributes are not in the FlatTessellation.ush and Tessellation.ush files

These posts are from 4 years ago. Has the method changed in 4.26 ? How can I obtain the same result?

Thanks