Using entry single variable names when Plugin tag inside weblog:entries tag

I’m working on a plugin to display entries with a reverse relationship to the selected entry. I started to use the reverse_related_entries tag until I found that it is not possible to filter the entries returned by category or other properties.

the default variable names for the related entries are available within reverse_related_entries tag, but don’t seem to be within my plugin’s tag.

{exp:weblog:entries weblog="weblogname"}
<h2>{title}</h2>
  {exp:related:reverse category="{category_id}" entry_id="{entry_id}"}
  <h3>{title}</h3>
  {/exp:related:reverse}
{/exp:weblog:entries}

with the above code, the $TMPL->tagdata variable has the actual value for {title} of the entry determined by the exp:weblog:entries tag.

I do understand I can use a different variable name within the custom tag, but I’d much prefer to use the real variable name, for the sake of cleanliness or whatever.

is this possible?