Create Copy and Delete

Hi

I have 2 small issues with my model and need help please.

1. I have train.3ds image in my model, and i create copies of it at different locations for different trains. My first issue is i would like to put in code some where so that, on reset i delete only the newly created copies of the train, and i still have train.3ds in my model so that i can use it again. I tried on reset, but my train.3ds image also got deleted and i didnt have a image file to copy the 2nd time i run my model.

2. Each train has a few carriages, and i create copies of this too, i would like to distinguish between the trains, and so i would like to color my carriages with a different colour every time it is created. i tried set color but it had no significance and copies of carriages were cretaed with the same colour.

please help.........

Is your train a task executer flowitem ? If so, it should retain its shape.

Phil has posted about how to set part of a .3ds file as the Flexsim color here.