使用虚线填充更改雷达图实体填充（绘图）

Question

如何用虚线填充（如 fsmb 图中的绿色）替换实心蓝色图（情节一个）

蓝图代码

library(plotly)
fig <- plot_ly(
  type = 'scatterpolar',
  r = c(1,3,2,4,1),
  theta = c("A","B","C","D","E"),
  fill = 'toself',
  line = list(c(shape = "line"))
)