SSRS Data label on first and last entry
<p>I have a line graph which tracks days passed on the X-axis.</p>

<p>I would like for the data points to be visible on only the first entry and the last entry.</p>

<p>I tried the below, which I thought should show only the final entry, but in fact had the opposite effect.</p>

<pre><code>=iif(Last(Fields!DateTime.Value),False, True)
</code></pre>

<p>Changing from the Last to the First (or Max or Min) all have the same effect.</p>

<p>An example with data point on only the first entry:
<a href="https://i.stack.imgur.com/8qch4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8qch4.png" alt="enter image description here"></a></p>

<p>Many thanks.</p>