You need to set a variable to contain anything that clashes with TW's filter syntax (usually [ ] and { } etc)
<$set name=pattern value="201909(0[1-9]|1[0-4])"> <$list filter="[regexp:created<pattern>]"> </$list> </$set> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/27249bcb-ad8f-47ea-839c-0d1d0e2c6208%40googlegroups.com.