API Reference > core-common > Symbology > AreaPattern > AreaPattern.HatchDefLineProps > dashes dashes dashes: undefined | number[] Array of gap and dash lengths for creating non-solid hatch lines, max of 20. A positive value denotes dash, a negative value a gap, solid line if undefined Defined in core/common/src/geometry/AreaPattern.ts Line 26 Last Updated: 20 June, 2023