When you say custom function do you just mean something like a form you fill out? And what type of alert message?
I think that we need more context to give a useful answer. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/c5351887-e420-4e25-8b18-9960c763a962%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

