title: Emacs Orgmode table $> References does not work
body: <p><strong>GNU Emacs 24.4.1 org-mode</strong></p>
  
  <p>Here is an org-mode table</p>
  
  <pre><code>#+TBLNAME: revenue
  | /       | &lt;        |           | &lt;        |                  | &lt;    |       |         |        |            |           |      |       |        |       |         |       |
  | Product | Year_SUM | Month_SUM | Platform | Platform_SUM     | adwo | AdMob | adChina | adSage | appfigures | appdriver | coco | Domob | Dianru | Limei | guohead | youmi |
  |         |          |           |          |                  |      |       |         |        |            |           |      |       |        |       |         |       |
  |---------+----------+-----------+----------+------------------+------+-------+---------+--------+------------+-----------+------+-------+--------+-------+---------+-------|
  | Jan     |          |           | iOS      | #ERROR           | 1    |     1 |       1 |      1 |          1 |         1 |    1 |     1 |      1 |     1 |       1 |     1 |
  |         |          |           | Android  | =vsum($6..$&gt;);NE |      |     1 |         |      1 |            |         1 |      |     1 |        |     1 |         |     1 |
  |---------+----------+-----------+----------+------------------+------+-------+---------+--------+------------+-----------+------+-------+--------+-------+---------+-------|
  |         |          |           |          |                  |      |       |         |        |            |           |      |       |        |       |         |       |
  #+TBLFM: $5=vsum($6..$&gt;);NE
  </code></pre>
  
  <p>As you see ,the formula <code>$5=vsum($6..$&gt;);NE</code> can't be calculated! Here is  debug info: </p>
  
  <pre><code>Substitution history of formula
  Orig:   vsum($6..$&gt;)
  $xyz-&gt;  vsum($6..$&gt;)
  @r$c-&gt;  vsum($6..$&gt;)
  $1-&gt;    vsum((0)..$&gt;)
          --------^
  Error:  Expected `)'
  </code></pre>
  
  <p>But if I replace the formula with <code>$5=vsum($6..$17)</code> and then it works ,I can't figure out where is the problem? </p>
  
  <p>I need some help ,appreciate it!</p>