I am using an example I found on codeplex of SPServices with CamlQuery to try to get list item values with where clause on the ID. For whatever reason this doesn't seem to work for me; please help!

function getToolInfo(lastID) {

    var CamlQuery = "<Query><Where><Eq><FieldRef Name='ID'/><Value Type='Counter'>" + lastID + "</Value></Eq></Where></Query>";
    var CamlViewFields = "<ViewFields><FieldRef Name='ID' /><FieldRef Name='Title' /></ViewFields>";

  // this let me know that the function is getting called and passed the correct parameter value
  alert('function called and passed last ID of : ' + lastID);
  $().SPServices({
    operation: "GetListItems",
    async: false,
    listName: "FirstList",
    CAMLViewFields: CamlViewFields,
    CAMLQuery: CamlQuery,
      completefunc: function (xData, Status) {
        $(xData.responseXML).find("[nodeName='z:row']").each(function() {
        
        // just load a new variable with the returned value        
        var thisID = $(this).attr("ows_ID");
        alert(thisID);
        
      });
    }
  });
}

did I miss something obvious here?