Then you should contact the modification vendor to have him write a version which will work with current, and future, software versions.
Again, this feature is not a stock feature of UBB.threads, it has never been a stock feature, and it isn't the direction that we're currently taking the software.
You can read about the shortcomings of this modification at UBBWiki -
What happened to picupload?.
The feature request has been noted.