Nested expand-collapse, is it not possible?

Greetings again.

We are trying to insert an expand-collapse code inside another expand collapse code.

For instance,

[expand trigclass="noarrow" title='<img src="source of image" />' tag="div" alt="icon"]
  <span style="font-size: 12pt;"><strong>Evaluation Forms</strong></span>
  [expand trigclass="noarrow" title='<img src="source of image" />' tag="div" alt="icon"]Test[/expand]
[/expand]

There are two expand-collapse codes; when the first expand-collapse is clicked on, it shows the title “Evaluation Forms” and exposes the second expand-collapse.

Our expectation is that when you click on the inside expand-collapse image, it displays Test content.

The issue so far is that when you click the first image, it exposes the second expand-collapse image but also exposes the Test content.

Am I missing something?

Thanks in advance