Problem with EnvDirectGetSlot

[Christopher Nack]

I'm having a strange problem where I'm creating a COOL instance, running the engine, retrieving an instance slot value that was set via rules.  Then I reset the engine, create another COOL instance (of the same name), run the engine again where the rules set the slot value to a different value.  But this time, when I use EnvDirectGetSlot and DataObjectToString to retrieve the slot value, I actually get the slot value from the prior run.  This pattern appears to continue…I'm always getting the slot value from the previous run, not the current run.

Code snippet is:

SHORT CLIPSRuleService::executeRuleset( const String& ruleSetName, ArrayList& bomObjs, SHORT numOfRulesToFire )
{
    DATA_OBJECT slotValue;
    VOID    *engineEnv;
    VOID    *clpsCardPtr = NULL;
    Object    *arrayObject = NULL;
    String    objStr;
    String    tempStr;
    String    strSlot = "";
    int        idx;

    engineEnv = getEnvironment(ruleSetName);

    for (idx=0; idx < bomObjs.size(); idx++)
    {
        // Process each BOM objects
        arrayObject = bomObjs.get( idx );
        if ( NULL != arrayObject )
        {
            if ( NULL != dynamic_cast< String * >( arrayObject ) )
            {
                objStr = arrayObject->toString(objStr);
                getCoolInstanceStr(objStr);

                // Reset the Environment
                EnvReset(engineEnv);

                //Creating Instance
                clpsCardPtr = EnvMakeInstance(engineEnv, (char *)objStr.toCharArray());

                //Executing the ruleset
                EnvRun(engineEnv,-1);

                //Retrieve the Slot Value
                EnvDirectGetSlot(engineEnv, clpsCardPtr, (char *) "FloorLimit", &slotValue);

                //Convert the Data Object to String
                strSlot = DataObjectToString(engineEnv, &slotValue);

            }

[Christopher Nack]

Oh, and here's my class definition:

(defclass Card (is-a USER)
(role concrete)
(pattern-match reactive)
(slot CardNumber (type STRING))
(slot FloorLimit (type STRING))
)

[Gary Riley]

Use the EnvWatch function to watch rules, instances, and slots, so that you can observe changes as you create the instance and run your rules. I don't see anything obviously wrong with the code.