How to use the flower plug-in's

So I recently began experimenting with plug-ins for the first time, and I think I got the basics down except for one thing..

The flower plug-ins that I know do exist can't be found when I want to change the Mandelbrot forumla.

So they're here, shown as available in the file browser for plug-ins.

But then...

Not there when I try to find them after applying the Plug-in Formula under the Formula tab.

I got Orbit Traps for Outside coloring just so I have something there. But even when changing that the flower plugins are not showing up.

What am I doing wrong? 😭

If you look inside rkb.ulb, you'll find the first line of "Flower" to be

class RKB_TrapShapeFlower(common.ulb:TrapShape) {

so Flower can only be plugged into a place that wants a TrapShape. The Orbit Traps coloring on your Outside tab is such a place. Here's an example:

flower {
::XPw/Dhn2Ve12utNOQ03DQ+HE0+cTkolsc7C9w6UkC0LoANGbfpAG0SUWcDFpKJdc9f/Ok6id
  sumnsFnz5MDHOcIZmEnoxsPc7NOOaqmRidzYijEprzRaqOP2H555kTo7z1xvH+LDfiIVx+GC
  JSSKVrid/MtwZN7A5vDvP4ekHK01Bz1UMjiVU++4TE1t3YZadUCuUTF8Y3vaGyJw1RUiTo6T
  x+gHKI6cRacxBmmWiVAzCcZJITFXCXTkxe3DAx75mAJTIBwYr5C8foG7olhOlEZSOJ55YRWm
  DO9/Oo0mIxJjyIccBMVfSj5pYZ6dHyKcN0Bxlnid/EhTk0kHrE2apcbtbegBx0lUZ7+QzHb/
  G8LhtTK09Q6uX2uvSY78sjx6PNG7lcK9FiEUQfBwrRp0Yp2kd6RhytlmV2Y09edNtDTZiD64
  gbvhyV0USVJhEzVZAHugTcUCGNNOAtKMYZQY0ybvBY0FLjyJYZL6oVoFLWChaf59EWP59PJx
  pUYoHEMhEW4rzlJ1fO6Kw3l7o6NScpqPWdWCu2az3nXE6wvO4mCZV6ASyxuJiiCB3GnmIbTj
  F3R596YdKond3MAfQRkvJCw/LfDEKtEOvVd+oLEvQUQ12cYkKpZ65KvKBDN38nDUY3L22fy7
  tgWpJlzjh6Zyx5jc+6iVlkEd/zRVOuE24JfentM8HfZ9WTp4Tmhfsqh/g0muQsBmNmtey3b4
  w4OC/pqwx+jzf5Nivz+qYHUR4Nk5N5UoD/IRV2amQUMsArPw2TGVgNHpwJHQ/r+NfgnUhAaE
  y1jozPop7JqHlkfPq7qg9PFlDHz/E/CZSdMgmUlnGsWsG03VJn90wZA7K53Ep+nzCTDGNVKj
  +vwdNM7EHZfL0hp/GsDUS3wautXtIbd1sgWOb4wRySCOFSbzA3ktwuQQ0kCaWIsd5qOueKVF
  wNLmVcCAnZgWJ50RKe3QnIUISJDdRAThAUjRegJUEl2dI+TXHUjyswad48gdkqz15wqWuglO
  YhQLAv7QhdMDnTXdLq+n+tXBZkUQzdo+I0hCzTI/yIk7gSNd24Ck2jtn4aQtwtFFrPtpdGbm
  TNXmyeBSVhQAv4gLcaPB+dRBOU4K1/JOyxqU87DDXFtcR9o+hveYjMVWQLrt4VPQQzA+Ljii
  QAzqxXeNwVLtvzoCbQ4K/FgW1uz7aw+oBkFYehMoVtEC6IRbEU7N/GDvKSOLBybAfi6MpRBD
  PZQdm5oVDI8CvLkpBtZtpB9ioAkfUjhwgrhuI4iw41a/O/W0w7JqeH4VlDVA9aflIKEyt//C
  GYhG
}

If you want to replace the Mandelbrot plug-in on your Formula tab, you'll need something of the type "Formula" or one of classes descended from Formula. UltraFractal is correct in not showing any Flower plug-ins there.

So I'm basically only able to use flower plug-ins in the Outside tab, not Formula?

First to clarify terms, as it can be confusing: all the pieces of UF that go into any of the tabs (Mapping, Formula, Inside, Outside) are called formulas. Some are plug-ins, some are not. The formulas that work in the Formula tab are of class Formula and classes based on the Formula class.

With the current state of UF formulas, you can use the Flower plug-in on the Outside and Inside tabs, but not the Formula tab or the Mapping tab.

The basic action of each iteration of a Formula class plug-in is to take a complex number and produce another complex number. The basic action of the Flower plug-in, of class TrapShape, is to take a complex number and produce a real number; the real number is designed to be used as an index into the gradient. The two classes are not compatible

It would possible for a Formula class plug-in to use a TrapShape plug-in as part of its calculation, but none of the existing Formulas do that.

Alright ty ty, that makes more sense now. Thank you for your help!