Average model content performance measure

Hi,

I have built a model and am having trouble with one of my performance measures in the experimenter. I want to record the average content of the model (i.e. how many flow items are in the model)

To do this I have created a global table with the current content in the first row and cell (being updated whenever an item enters or leaves the system). I have a recorder capturing this value and providing me with an average, and I want to reference this average in my performance measure within the experimenter. The code I am using for the PM is:

return getnodenum(node(">Recorder1/variables/graphdata/1/5", model()));

But this doesn't seem to work. Furthermore, if I enter this line into the script window it doesn't work. I've tried various ways of rewriting this code using ranks, etc. but cannot get it to work. What am I doing wrong and/or is there an easier way of doing this?

Any help would be greatly appreciated

node(">Recorder1/variables/graphdata/1/5", model())

vs

node("/Recorder1>variables/graphdata/1/5", model())

You are trying to go into the model's object data instead of the Recorder's.

Thanks Phil!