[Zope] How do you replace content with an action?

[Laura McCord]

I need to be able to replace the content of a defined variable with an
action. That action is by clicking a link that will redefine the
variable with different content.

Here is an example:

<div tal:define="results here/view_pc_sql">
<!-- The link should replace the contents of 'results' from the previous
line of code.
 This should only occur when the link is clicked.  -->
<a href="" tal:define="global results here/view_sortSysName">link</a> 
<div tal:define=" start request/start|python:0;
                  batch python:here.getBatch(results)">

Any ideas? Or has someone done this before?

I have been stuck on this issue since Monday.
Thanks.