[v11beta12] Should interpolate work for a line layer's line-width, where that width should increase with zoom ?

[softlion]

I'm displaying a polyline, I can see it, but it's width does not change with zoom. Did I make something wrong ?

 <GeoJSONSource id="trails" data={this.state.trailsGeoJSON}>
                                    <Layer
                                        id="trail-lines-casing"
                                        type="line"
                                        paint={{
                                            'line-color': '#ffffff',
                                            'line-width': ['interpolate', ['linear'], ['zoom'], 10, 2, 14, 5, 18, 10],
                                            'line-opacity': 0.6,
                                        }}
                                        layout={{
                                            'line-cap': 'round',
                                            'line-join': 'round',
                                        }}
                                    />

[softlion]

interpolate linear has only 4 parameters ... closing.