主题：在ＶＢＡ里如何调用系统的函数？

  dim BuyHoding1
 dim hold2
 dim BuyTodayHoding1
 dim MktPrice2
 dim SellHoding1
 dim AvgPrice2
 dim SellTodayHoding1
 dim MktValue2
 dim AgeCost2
 dim BuyCost
 dim SellCost
 dim PNL
 Dim UseMargin

 '取指定持仓品种信息
 call Order.HoldingInfoByCode("M01","dq",Hold2,MktPrice2,AvgPrice2,MktValue2,AgeCost2,PNL)
'call Order.HoldingInfoByCode2("M01","dq",BuyHoding1,BuyCost,BuyTodayHoding1,SellHoding1,SellCost,SellTodayHoding1,PNL,UseMargin,"800635")

根据范例写的，总是提示我 编译器424错误，order 缺少对象。