HOW CAN I FIX THIS ERROR IN NS2?

问题

While running my tcl script for new protocol in ns2 it shows error as:

num_nodes is set 108 
> invalid command name “Agent/HEBM” while executing “Agent/HEBM set radius_2” (file “balance.tcl” line31)

来源：https://stackoverflow.com/questions/51834497/how-can-i-fix-this-error-in-ns2