min length on thread starter only?

[khininger]

hi

i'd like to set a minimal length on thread starter only. so that the first post in a thread has to be at least 200 characters, while responses can be just one word.

i see how to set min post length - but that's for all the posts, both starters and responses. i need short responses and long starters. any way to make it happen?

thank you very much!