如何在Pine脚本策略上添加时间控制

//@version=4
study(title="时间控制示例", shorttitle="时间控制")

// 定义时间控制变量
startHour = input(defval=9, title="开始小时", minval=0, maxval=23)
startMinute = input(defval=30, title="开始分钟", minval=0, maxval=59)
endHour = input(defval=15, title="结束小时", minval=0, maxval=23)
endMinute = input(defval=0, title="结束分钟", minval=0, maxval=59)

// 获取当前时间
currentTime = time(timeframe.period, "0000")

// 判断是否在指定时间范围内
isWithinTimeRange = currentTime >= timestamp(year, month, dayofmonth, startHour, startMinute, 0) and currentTime <= timestamp(year, month, dayofmonth, endHour, endMinute, 0)

// 打印时间控制结果
plot(isWithinTimeRange ? 1 : 0, title="时间控制结果", color=color.green, linewidth=2)