Question How to use Shader.SetKeyword

When I turn on Global Shader keyword with Shader.SetKeyword, I get the error "Global keyword _GLOBAL_KWD doesn't exist".

I have wrote pragma on the shader below
#pragma multi_compile _ _GLOBAL_KWD

And Shader.SetKeyword(new GlobalKeyword("_GLOBAL_KWD"), true); on the script.

I have tried with both URP/Builtin RenderPipelines and get the same error.
Is there mistakes somewhere?

The procedure to reproduce the error in the attached project is as follows
1) Open SampleScene.
2) Play.
3) Press the top left button.
4) Console says "Global keyword _GLOBAL_KWD doesn't exist".

Thank you in advance.

 

I've missed to write a version it is 2021.3.9f1.

 

Use

GlobalKeyword.Create(string)

or

Shader.EnableKeyWord(string)

 

Thank you very much!