res5= ("D")
o = request.security(syminfo.tickerid, res5, open, barmerge.gaps_off, barmerge.lookahead_on)
c = request.security(syminfo.tickerid, res5, close[1], barmerge.gaps_off, barmerge.lookahead_on)
hz = request.security(syminfo.tickerid, res5, high, barmerge.gaps_off, barmerge.lookahead_on)
l = request.security(syminfo.tickerid, res5, low, barmerge.gaps_off, barmerge.lookahead_on)
警报条件（购买，标题=“购买”） 警报条件（出售，标题=“出售”