invalid command name ""

[Zhenhai Duan <duan@cs.umn.edu>]

I just wrote a simple program. But met the following problem and I did
not know the way to check errors, Any help will be appreciated. The error
message is:
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invalid command name ""
    while executing
"$flow set on-interval  $flowp(oninterval)"
    (procedure "creflow" line 10)
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I am using Nsv1, and flow class is derived from Handler and NsObject.
In the command method, I called NsObject::command(...).

Are there anything I should pay attention to when I create a new "agent"?

Thanks.
--Zhenhai
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Zhenhai Duan		      PhD student
duan@cs.umn.edu		      Department of Comp. Sci. and Eng.   
Tel. 612-6267526(Office)      University of Minnesota          
http://www.cs.umn.edu/~duan
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