InputStringW and unicode

Hello.
Delphi 2007.
Please excuse my ignorance on this subject.

These works perfectly fine:

RTF.InputStringW(#947);   // gamma lower   RTF.InputStringW(#1043);  // gamma upper

In the RTF file producing:
\u947 ?
\u1043 ?

As expected and displayed nicely.

However, these do nothing:

RTF.InputStringW(#8805);  // greater than or equal
 RTF.InputStringW(#8804);  // less than or equal

I expected to see the following in the RTF file.
\u8805 ?
\u8804 ?

But there is nothing.

Using SymbolDialogEx does in fact produce the correct results after selecting the characters.

Can someone enlighten me?

Regards.

Please accept my apologies. It was a busy week.
The code above works perfectly fine if it actually runs. In my case I omitted a key menu handler property and didn't realize it until today.

Regards,