Thank you Marc,
I didn't know the ActionListops Widget, but I see that is necessary a trigger for execute it (how the button widget)
I'll try to explain better what I would like do.
I would like to replicate the behaviour of
Example: Quiz creation that I've seen in
http://tw5magick.tiddlyspot.com/ I have many tiddlers about one subject with the same tag (ie: lesson1) and in the Lesson1 tiddler i've created a list field and I've hardtyped all the tiddlers in the order that I want to navigate.
After I've created a navigation tiddler with the following content
Next: <$list filter="[is[current]next[Lesson1]]"/> / Previous: <$list filter="[is[current]previous[Lesson1]]"/>
This works perfect, but I would like don't have to hardtype every new tiddler that I'll create with the tag Lesson1in the list filed, but If I use the list widget or I create a macro and i put it in the field list don't work.
<$list filter="tag[lesson1]" />
or
\define addToLIst () <$list filter="tag[lesson1]" /> and I put in the list field <<addToList>>
Thank you again
Jose