Identifying a specific effect instance via AEGP_EffectCallGeneric() / PF_Cmd_COMPLETELY_GENERAL

Hi,

The objective is to identify and select a certain effect instance among all instanciated effects. I'm using the following code segment to iterate and scan all the effects currently applied:

    // Data structure used for identification
    typedef struct
    {
        uint64_t uniqueID;
        bool isKeyEffect;
    }
    t_struct;
    ...
    AEGP_ItemH itemH2 = 0;
    AEGP_CompH compH = 0;
    err = suites.ItemSuite8()->AEGP_GetActiveItem(&itemH2);
    if(itemH2 == 0)
        return err;
    err = suites.CompSuite9()->AEGP_GetCompFromItem(itemH2, &compH);
    if(compH == 0)
        return err;
    AEGP_Collection2H collectionH = 0;
    AEGP_LayerH layerH = 0;
    A_long numLayers = 0;
    t_struct key =
    {
        getEffectID(),
        false
    };
    bool found = false;
    
    if(AEGP_GetCompNumLayers(compH, &numLayers) == PF_Err_NONE)
    {
        // Scan comp layers
        for(A_long i = 0; i<numLayers; i++)
        {
            suites.LayerSuite7()->AEGP_GetCompLayerByIndex(compH, i, &layerH);
            
            AEGP_EffectRefH layerEffH;
            A_Time t = {};
            A_long numEffects;
            if(suites.EffectSuite3()->AEGP_GetLayerNumEffects(layerH, &numEffects) == PF_Err_NONE)
            {  
                // Scan all instanciated effects
                for(A_long j = 0; j<numEffects; j++)
                {
                    suites.EffectSuite3()->AEGP_GetLayerEffectByIndex(0, layerH, j, &layerEffH);
                    AEGP_InstalledEffectKey keyH;
                    suites.EffectSuite3()->AEGP_GetInstalledKeyFromLayerEffect(layerEffH, &keyH);
                    //// This one is the problem: It never triggers any PF_Cmd_COMPLETELY_GENERAL event.
                    //// It returns PF_Err_NONE, however.
                    err = suites.EffectSuite3()->AEGP_EffectCallGeneric(0, layerEffH, &t, PF_Cmd_COMPLETELY_GENERAL, (void*) &key);
                    ////
                    if(key.isKeyEffect)
                    {
                         // Select effect
                         ...
                         found = true;
                    }
                    suites.EffectSuite1()->AEGP_DisposeEffect(layerEffH);
                    
                    if(found)
                        break;
                }
            }
        }
    }

getEffectID() returns a unique 64 bits identifier generated when my effect is instanciated.

Now in my event handler I try to do the following to identify my "key" instance:

     switch(cmd)
     {
            case PF_Cmd_COMPLETELY_GENERAL:
                {
                    // Identify effect  
                    t_struct *ptr = (t_struct*) extra;
                    ptr->isKeyEffect = (ptr->uniqueID == getEffectID());
                }
                break;
            ...
     }

The problem is that on Mac AEGP_EffectCallGeneric() doesn't trigger any PF_Cmd_COMPLETELY_GENERAL event, while it does on Windows. Any hint on what I am doing wrong here?

Thanks!

Best,

Reimund