Cannot add new character

Hi,
I have fonts where I need to add special marks/signs. In central Europe languages we use Š, Ď etc. I found unicodes for these particular characters and have problem with Ď. In the font set there is no such a character and when I want to add it, Font Creator just don´t add it - as it seem it is already there…But it-s not.
I choose Insert–>Characters -->and add the certain unicode of the character. Normally, when the font does not include the characters, it displays them and I can create them. But in several cases Font Creator does not display them. What can I do please? All the ideas are welcome..

here are the fonts I have problem with
English111
VivaceBT-Regular,
EmbassyBT-Regular,
FlemishScriptBT-Regular,
FuturaBT-Light,
PiranesiItalicBT-Regular

  1. Select the .notdef glyph.
  2. Open the Glyph Properties toolbar (F3). You will see that many code-points are assigned to the .notdef glyph.
  3. Delete all of the code-points, and apply the changes.

You can now add the required characters from the Insert Characters dialogue.
notdef glyphs.png