It is I've done it manualy with art money if you track the in stock food you can find it but it's quite tricky to catch... nevetheless it's doable. I would have prefered that instead of option like reveal enemy units or super unit but I'm not complaining.
So PWizzard don't read me bad I said the trainer was really fine and good job I never complained. Jutst said one option that may come in a future update.
Sure it is ùmoreover I can track it manually so that's good. So no trouble it is not in. And I far more prefer the trainer to handle with quick research 1turn building, options I can't track with art money.