Question Additional light - Cel Shading Graph

Hi,
I am trying to make cel-shading graph, but actually my shader graph didn't react to additional light. I know this is normal, but I can't seem to implement an additional light script in my shader graph.
Unity version: 2019.4.17
URP version: 7.3.1

I found this script for additional light:

Code (CSharp):

1.  
2.  
3. void AdditionalLights_float(float3 SpecColor, float Smoothness, float3 WorldPosition, float3 WorldNormal, float3 WorldView, out float3 Diffuse, out float3 Specular) {
4.     float3 diffuseColor = 0;
5.     float3 specularColor = 0;
6.  
7. #ifndef SHADERGRAPH_PREVIEW
8.     Smoothness = exp2(10 * Smoothness + 1);
9.     WorldNormal = normalize(WorldNormal);
10.     WorldView = SafeNormalize(WorldView);
11.     int pixelLightCount = GetAdditionalLightsCount();
12.     for (int i = 0; i < pixelLightCount; ++i) {
13.         Light light = GetAdditionalLight(i, WorldPosition);
14.         float3 attenuatedLightColor = light.color * (light.distanceAttenuation * light.shadowAttenuation);
15.         diffuseColor += LightingLambert(attenuatedLightColor, light.direction, WorldNormal);
16.         specularColor += LightingSpecular(attenuatedLightColor, light.direction, WorldNormal, WorldView, float4(SpecColor, 0), Smoothness);
17.     }
18. #endif
19.  
20.     Diffuse = diffuseColor;
21.     Specular = specularColor;
22. }

My Shader Graph:


Thank for advance for your help