I am attempting to get the postcode from a website using this code in VBA:
variableName = driver.findElement(By.XPath(".//*[@id='T_F2']/fieldset/div[1]/div/div[4]/span[2]"))
This however gives me the error:

I'm assuming this error is just a simple way of telling me that my XPath is wrong. With me being no genius as XPath, I simply installed the FireBug and FirePath add ons which generated the above XPath for me. The thing is though, when I enter the XPath into FirePath .//*[@id='T_F2']/fieldset/div[1]/div/div[4]/span[2] and hit evaluate, it can find the postcode just fine.
Is there anything I might of done wrong? Here is the code behind the website I am trying to get the postcode from:
<div id="T_F2">
<fieldset>
<div class="txt_align_centre padding_bottom_5">
<div class="txt_align_left">
<div class="err_row">
<span class="red_text_v err_formw">
You searched for telephone number 02075884760.
<br></br>
</span>
</div>
<div class="row">
<span class="form_label">
<label>
CSS Exchange:
</label>
</span>
<span class="formw_nonedit">
</span>
</div>
<div class="row">
<span class="form_label">
<label>
District code:
</label>
</span>
<span class="formw_nonedit">
CL
</span>
</div>
<div class="row">
<span class="form_label">
<label>
Post code:
</label>
</span>
<span class="formw_nonedit">
EC2M 3WA
</span>
</div>
<div class="row">
<span class="form_label">
<label>
PCP Id:
</label>
</span>
<span class="formw_nonedit">
</span>
</div>
...
</div>
</div>
</frameset>
</div>
There are several divs with the class row. Each row has a span class called form_label and formw_nonedit. I am interested in the formw_nonedit span class that contains the post code EC2M 3WA.
Edit: I modified my code to use VBA Remote Control rather than VBA WebDriver since I have a better idea of how to solve the problem this way. Due to this, I changed driver.findElement(By.XPath(".//*[@id='T_F2']/fieldset/div[1]/div/div[4]/span[2]")) to selenium.findElement(By.XPath(".//*[@id='T_F2']/fieldset/div[1]/div/div[4]/span[2]")). This leads to the error: Object doesn't support this property or method. Just wondering how to get findElement to work or if there was a equivalent? I am hoping this is relevant enough to not deserve it's own question.
.//*[@id='T_F2']//div[@class='row'][contains(text(),'Post code')]/span[@class=formw_nonedit']