Create Network Node At Reset

HI,
I would like to have my model generate Network nodes automatically at Reset. Based on Brandon's tip (/threads/thread451&highlight=NetworkNode) I built the logic, and it seems to work. However, it gives me two issues that I dont understand and need help.
In the attached model, the logic and only logic is in "Reset Trigger" of "LineGenSource" object to demonstrate my approach.

First,
Without the line 33 and 34 (connection between network node), it seems the logic works perfectly fine. However, I always receive following message from Flexsim.
"Exception Caught on NetworkNode draw for PNN1_3 validating data"
I know Flexsim wants to tell me he is not comfortable with my logic. I searched the forum, but couldnt locate the thread regarding this message. Could anyone know about this let me know what I did wrong? My original model runs fine ignoring this message, though.

Second,
With the line 33 and 34, Flexsim pleasantly FREEZES!!. Isn't it a valid execution to connect between nodes? I am definitely missing here but don't know what it is.
By the way, Brandon suggested using "createinstance" but somehow it doesn't work for my model. Instead, I used "createcopy". Maybe it is a root cause of all these??
Thank you for your help in advance.
Sung

I realized that I misused the createinstance. As Brandon suggested in his post, the createinstance solves my two issues!!
Thank you again, Brandon.