Hi >From the documentation I understand that in interactive mode, using the alter command one can change the device parameters. Does this also mean I can change the values of a resistance or voltage source in the netlist? If so how? I used the following circuit: Bridge Rectifier .options TEMP=25 V2 2 1 SIN(0 vmax 60) R2 0 3 resistance D8 1 3 1N4007 D6 2 3 1N4007 D4 0 2 1N4007 D2 0 1 1N4007 .param resistance = 10k .param vmax = 5 .end I've tried alter r2 = 10 alter r2 resistance = 10 But it won't work. How do I alter vmax or resistance? Thanks -- Ashwith J. Rego ----------------- My Webpage: http://ashwith.wordpress.com/ Find me on LinkedIn at: http://www.linkedin.com/in/ashwith Follow Me on Twitter at: http://twitter.com/Louisda16th _______________________________________________ electronic-lab mailing list electronic-lab@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/electronic-lab