JESS: Invalid Remove error message - my error or a bug?

[Eric Foertsch]

Title: Message

Hello

 

Could someone if this is an error on my part or a bug? I am getting this Jess exception error "Invalid Remove" but am not sure why.  I am running Jess 7.0A4

 

I start asserting various facts,firing rules  and execution functions (see below)

 

 ==> f-0 (MAIN::comparative-relative-strength)

 ==> f-1 (MAIN::base-for-crs "SP-500")

 ==> f-2 (MAIN::find-stock-info "SP-500")

==> Activation: MAIN::get-stock-info :  f-2

 ==> f-3 (MAIN::find-stock-info DPTR)

==> Activation: MAIN::get-stock-info :  f-3

 ==> f-4 (MAIN::over-n-days)

 ==> f-5 (MAIN::starting-n-days-ago)

FIRE 1 MAIN::get-stock-info f-3

 ==> f-6 (MAIN::epsStock ....)

 ==> f-7 (MAIN::stock (class <External-Address:java.lang.Class>) (.....)

FIRE 2 MAIN::get-stock-info f-2

 ==> f-8 (MAIN::epsStock ....)

 

And I get the following exception:

 

Exception occured
Stack trace

 

 while executing (definstance stock ?tc2000stock)
 while executing deffunction getTC2000StockInfo
 while executing (getTC2000StockInfo ?symbol 500 "all")
 while executing defrule MAIN::get-stock-info
 while executing (run)
Error in Java. Cause
Invalid remove
Jess code in Error:( run )

 

And here is the function.

 

(deffunction getTC2000StockInfo (?symbol ?numberDays ?ratings)
    "Call TC2000 stock server to get info on requested stock"
    (bind ?tc2000stock (?*tc2000Server* getStockData ?symbol ?numberDays ?ratings))
      (assert-eps-per-quarter ?tc2000stock )
      (definstance stock ?tc2000stock )
    )

 

I was wondering if there is a problem with the symbols. I assert fact with symbol "SP-500" but noticed in the exception trace it shows only "500". If I use a symbol without a hyphen I don't get the error.

 

Any words of advice would be welcome.

 

Eric Foertsch