Pine script Tradingview松树脚本绘制楼梯图

我想绘制在交易视图中无法获得的收益质量。然而，我得到的不是楼梯图。如何绘制楼梯图？我在plot函数中尝试了style选项，在financial函数中尝试了gaps选项，但没有成功

study("Quality of earnings")

CFO = financial(syminfo.tickerid, "CASH_F_OPERATING_ACTIVITIES", "FY")
net = financial(syminfo.tickerid, "NET_INCOME", "FY")
plot(CFO/net)

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这将绘制一条阶梯线，覆盖在主图表和左刻度上

//@version=4
study("Quality of earnings", overlay=true, scale=scale.left)

cfo = financial(syminfo.tickerid, "CASH_F_OPERATING_ACTIVITIES", "FY")
net = financial(syminfo.tickerid, "NET_INCOME", "FY")

qoe = cfo/net

plot(qoe, style=plot.style_stepline)