using variable as attribute in xpath expression - wrong group?

[KathyB]

Hi, I'm using the following xmlDocument and xpath to load a file using
a variable.

I've tried several renditions of the xpath using the variable but
without success (error: object variable not set). If I hardcode it as
[@name="Label"] it works so I know the xpath is ok, except for the
variable syntax?

Any hints appreciated. Thanks, kathy

Code:

Dim strStation As String = "Label" 'ultimately need var set from
control
Dim xDoc As New XmlDocument()
xDoc.Load(Server.MapPath("test.xml"))
Dim xNode = xNode.SelectSingleNode("/WorkFlow/Assembly/Station[@name='"
& strStation & "']/WI[1]/@doc")
Dim strWI As String = xDoc.InnerText.ToString()