在vbscript中调用dll出错，大家帮忙看一下是什么原因？？

[net_net]

dim docPrint
set docPrint=CreateObject("Yzprint.print")
docPrint.repcool "& num &","& xm &","& PageNum &"
上面几个变量是传给dll的几个参数
用变量传递给参数时出错，直接把参数值写个固定值就没事docPrint.repcool "12345","bb","1"

[是是非非]

dim docPrint
set docPrint=CreateObject("Yzprint.print")
docPrint.repcool num,xm,PageNum

[是是非非]

从ASP给VBScrip传递参数：

<SCRIPT Language="VBScript">
dim docPrint
set docPrint=CreateObject("Yzprint.print")
docPrint.repcool <%=num%>,<%=xm%>,<%=PageNum%>
</Script>