noise-expression not expressing

[ilit]

I have defined named noise expression

Code: Select all

data:extend{
    {
        type = "noise-expression",
        name = "n1",
        intended_property = "n1",
        expression = {

https://github.com/ilit/factorio-ambien ... n/data.lua

but cant seem to make it work control stage.
game.surfaces.nauvis.calculate_tile_properties does not calculate values of my n1 noise. Just empty results. Elevation property for example is calculated successfully.
https://github.com/ilit/factorio-ambien ... es.lua#L12