Z Contour Size has no effect

📊 Plotly Python
1 
    fig.add_trace(go.Surface(
            x=y_values, y=x_values, z=z,
            contours_z=dict(show=True, usecolormap=True, highlightcolor="limegreen", project_z=True, highlightwidth=1, size=0.01),
        ), row=row+1, col=col)

Changing the ‘size’ value here does nothing. The contour lines stay the same

image
image491×458 50.5 KB

My intention is to get more of these contour lines (decrease the contour step’s width/size)