<$list filter="[tag[control]]">
<$macrocall $name="hoverTiddler" tiddler1={{!!title}} tiddler2={{!!text}}/> <br>
</$list>
You can only use constant values, not {{field transclusions}}, with the double-angle bracket <<shorthand macro syntax>>. For {{field}} or <<variable>> transclusion support, you need the full widget as shown above. Note that for this form, you need to specify the names of the macro parameters, in this case tiddler1 and tiddler2. You can find those in the macro definition if you don't know them:
\define hoverTiddler(tiddler1,tiddler2)
...
\end