Not able to add notequal symbol in FM8 document

The values reported in the character_sets.pdf document are correct. However, as Error indicates, you must be using the Symbol font in order to see the correct symbol. Follow his instructions and use the appropriate font to get the desired symbols listed in the PDF.

With FM8, you have two ways to implement not_equal (≠), depending on what vintage font you want to use:

1. With a legacy codepage "Symbol" font, use character code point \x2d (0174, Ctrl+q-) or \xb6 (0185, Ctrl+q9), and use a Character Format (or override) that applies font "Symbol". The Adobe documentation on which code point to use is unclear (I'm looking at the 7.1 document), as the glyph shown is not the glyph named.
2. With a Unicode* font, use character code point U+2260 (\u2260). This could either be a general font that is generously populated, or a specific Unicode symbol font.

______________

* Adobe's "Symbol Std" fonts are presumbly Unicode, that is, they would provide the ≠ glyph at code point U+2260. Unfortunately, Adobe provides no tables of glyph coverage for their fonts, nor the code points thereof, apparently relying instead on glyph block names "Greek, Symbol/Pi" which don't seem to map directly to Unicode naming conventions and thus provide no assurance that you'll get the glyph you think you're buying. OpenType may imply Unicode, but it would be nice if Adobe would say so.