Niagra failure to compile

[Project_REMI]

getting some errors trying to create water simulation with niagara system. have been following this documentation but something is outdated.
This is what i need to implement but do not know how:

1. In_UV: A float2 for the UV coordinates.
2. In_MipLevel: A float for the mip level.
3. Out_Value: An out float4 to store the sampled value.

However, the script is only providing the UV and Out_Value parameters, missing the MipLevel parameter.

https://dev.epicgames.com/community/learning/tutorials/qM1o/unreal-engine-ocean-simulation#4emitterspawnscripts