没有把止损单挂上去　[金字塔]

另外，

Sub UserForm1_starttrade_Click()
    if marketdata.IsExistStock(userform1_codebox.text,userform1_marketbox.text)=0 then 
       application.MsgOut "品种或市场错误"
       application.MsgOut userform1_codebox.text & "  " & userform1_marketbox.text
       exit sub
    end if

end sub

marketdata.isexiststock的用法不是这样吗？这样子总是提示 品种或市场错误