[ns] Error rate between basestation and mobilehost

[Kyeongjin Lee <kjlee@datacom.chungnam.ac.kr>]

Dear

I set Error model following way in ns script

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set em [new ErrorModel]
$em drop-target [new Agent/Null]
$ns lossmodel $em $HA $MH
$em set rate_ 0.1
-----------------

following error

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invalid command name ""
    while executing
"$link errormodule $lossobj"
    (procedure "_o4" line 3)
    (Simulator lossmodel line 3)
    invoked from within
"$ns lossmodel $em $HA $MH"
    (file "wireless-mip-test.tcl" line 219)
-----------------------------------------

How can I set error rate(error model) between BS and MH?


Thankyou.