Couldn't able to read XML

Dear all,

I have the XML like
<Header>
<Detail>
<Values>
<Value1>1</Value1>
<Value2>2</Value2>
</Values>
<Values>
<Value1>1</Value1>
<Value2>2</Value2>
</Values>
</Detail>
</Header>

and i tried the following TDL code to Read

[COLLECTION :XmlCollection]
Data Source : File XML : "C:\test.xml"
XMLObjectPath : "*:*:*"
;XMLObjectPath : "*:*"

[FUNCTION : Fncall]
a0 : msgbox : "" : "Calling Collection"
a1 : WALK COLLECTION : XmlCollection
a2 : msgbox : "" :$Value1
a3 : msgbox : "" :$Value2
a4 : END WALK

This code is not reading the xml values properly please anyone help me to fix this.
Please Find the attachment for the XML.

Regards,
Dhanapal Amulraj.