Although not yet integrated in the main toolset, the Fuzzy Logic API is now available for testing on the main ForeTrade web site:
http://www.foretrade.com/fuzzy_logic_for_tradestation.htm
I understand it may sound a little complex at first, but rest assured it is very simple to use, and all FL functions have been grouped in a single EasyLanguage function.
http://www.foretrade.com/fuzzy_logic__easylanguage_code.htm
Two sample indicators are also provided for testing purposes:
http://www.foretrade.com/fuzzy_stok_indicator.htm
For more info, please contact Support@ForeTrade.com