Hello, I use Packet Tracer for my lessons, I am an instructor in the armed forces, and I am facing a small problem in my activity creation. I would like to set up vlans in random mode. I defined a number variable with a min and max number for my Vlan numbers. I then want to evaluate my students to see if they put the right ports in the right Vlans and if they put the IP address on the administration vlan. for ports in vlans it works fine. On the other hand, it is the administration part which does not work because in my response network I cannot replace the VLAN interface with the value [[valanadmin]] that I created. Has anyone ever faced this? Thanks for your help. If you have sources (books or WEB sites) on the use of packet tracer in advanced mode, I am interested, in particular the scripting which I do not know. I specify that I have a very good knowledge of cisco hardware and the network in general. Good day to you.