I'm not familiar with the tool. I am familiar with VB and VB.net you're using but see if this syntax works better for you. AHH... also... you can't use ' unless you're using straight VB programming. You must exit your ' with an addition ' at the end. Looking at Fiddle... all your Declarations and szToken were all highlighted as comments.
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<pre class="prettyprint lang-vb">
<!--Variable Declaration-->
Dim szToken as String
Dim oXMLHTTP
Dim szBaseUri, szUri
szToken.text = ("Please see Logon code example for how to obtain a Token")
<!--set the base URI path-->
</pre>
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