How to custom mesh size in LUA script of CADFEKO in FEKO 2025?

hellokitty

My script is as follows.

MeshSettings = project.Mesher.Settings
properties = MeshSettings:GetProperties()
properties.MeshSizeOption = cf.Enums.MeshSizeOptionEnum.Custom
properties.TriangleEdgeLength = '0.1'
MeshSettings:SetProperties(properties)

project.Mesher:Mesh()

but it's throwing an error.

attempt to index field 'Enums' (a nil value)