[ns] help energymodel

[sachin dahiya]

I am workign with the energy model using the example scripts provided
wireless-newnode-energy.tcl
Iam gettign this error when I run the abovefile where the energy model
was initialized.
invalid command name "-energyModel"
    while executing
"-energyModel $opt(energymodel) \
                 -rxPower 0.3 \
                 -txPower 0.6 \
                 -initialEnergy $opt(initialenergy)"
please help me
thanks