Hi,
Try this
<$list filter="[all[tiddlers]!is[system]] :filter[get[modified]compare:string:gt[20210423]compare:string:lt[202105]]"><$link /><br></$list>
[all[tiddlers]!is[system]] ... gives you all tiddlers
:filter[
... uses a subfilter run that is used to limit the results, but it will give back the titles instead of the modified field.
get[modified] ... reads the modified field
compare:string:gt[20210423] ... Will give _all_ tiddlers that have been created after April 23 this year
compare:string:lt[202105] ... Will give you all tiddlers that have been created befroe May this year.
] ... closes the :filter[
hope that helps
mario