Can't get to value inside XML spanclass - vba

Question

I'm trying to retrieve a value in one of the spanclasses in an online XML-file.
File: http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml
I want to get to the USD rate but my code does not seem to loop through and span-classes, where is my mistake?
My code
Function response_Text(url As String) ' get the responsetext from an xml request
Dim xml As Object
Set xml = CreateObject("MSXML2.XMLHTTP")
With xml
.Open "Get", url, False
.send
response_Text = .responsetext
End With
Set xml = Nothing
End Function
Private Sub find_ClassElement(HTML_doc As MSHTML.HTMLDocument) ' return value inside span_class
Dim ticker As Variant
Dim XML_elements As MSHTML.IHTMLElementCollection
Dim XML_spanclass As MSHTML.HTMLSpanElement
Dim XML_targetElement As MSHTML.HTMLLIElement
Set XML_elements = HTML_doc.getElementsByClassName("line") **<--- something seems to be wrong here, the code does not loop through any span_classes after this point as intended ( the for statement is not being executed )**
For Each XML_spanclass In XML_elements
If InStr(XML_spanclass.innerHTML, "USD") > 0 Then
Debug.Print "success"
Set XML_targetElement = XML_spanclass.parentElement
Debug.Print CSng(XML_targetElement.getElementsByClassName("webkit-html-attribute-value")(0).innerHTML)
End If
Next
End Sub
Private Sub run() ' run the whole operation
Dim http_req As http_req: Set http_req = New http_req
Dim xml As MSHTML.HTMLDocument: Set xml = New MSHTML.HTMLDocument
Dim url As String: url = "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"
xml.body.innerHTML = http_req.response_Text(url)
Call find_ClassElement(xml)
End Sub

Answer 1

There are no tags with a class of "line" so your collection is empty - nothing to loop through. Here's another way
Sub GetUSD()
Dim xHttp As MSXML2.XMLHTTP
Dim xDoc As MSXML2.DOMDocument
Dim xCube As MSXML2.IXMLDOMElement
Dim xCubes As MSXML2.IXMLDOMSelection
Dim sCurrency As String
'load the xml document
Set xDoc = New MSXML2.DOMDocument
xDoc.Load "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"
'wait until it's completely loaded
Do
DoEvents
Loop Until xDoc.readyState = 4
'get all the cube tags
Set xCubes = xDoc.getElementsByTagName("Cube")
For Each xCube In xCubes
'some cube tags don't have attributes
On Error Resume Next
sCurrency = xCube.Attributes(0).Text
On Error GoTo 0
'if the first attribute is USD, get the second attribute
If sCurrency = "USD" Then
Debug.Print xCube.Attributes(1).Text
End If
Next xCube
End Sub
edit
I don't know xpath well enough to do this properly, but this works.
Sub GetUSD()
Dim xDoc As MSXML2.DOMDocument60
Dim xCube As MSXML2.IXMLDOMNode
Dim xCubes As MSXML2.IXMLDOMNodeList
Dim sCurrency As String
'load the xml document
Set xDoc = New MSXML2.DOMDocument60
xDoc.Load "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"
'wait until it's completely loaded
Do
DoEvents
Loop Until xDoc.readyState = 4
'get all the cube tags
Set xCubes = xDoc.SelectNodes("//*")
For Each xCube In xCubes
On Error Resume Next
sCurrency = xCube.Attributes(0).NodeValue
On Error GoTo 0
'if the first attribute is USD, get the second attribute
If sCurrency = "USD" Then
Debug.Print xCube.Attributes(1).NodeValue
End If
Next xCube
End Sub