求问关于Swarm产生柱状图的问题 多谢大家了！！

mushroom89

各位好，我想请教一下，我想产生一个柱状图，但是在buildActions（）好像selector那有问题，说
6 o* a; g' l( |8 E; F! L* f" O! hThere was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
swarm.analysis.EZDistributionImpl.step returns null
The process will be terminated.
5 E; v2 z4 N0 A(Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
    while executing
"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
9 l/ y3 t4 x# m: R3 I* `while evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
: _% M. M7 x2 N! O- C" k2 g*** event raised for warning: WarningMessage
$ A# t' p7 M- M( `- \6 j*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
9 d" F( w" q$ ?: u8 ?/ VAttempt to add null probe
" `. S6 n1 s' N; m/ S/ Z& Z1 s" G*** execution continuing...
7 M- x8 P; {. o5 W' h  _8 n请问第一个参数应该是什么呢 我设的是ezdist（一个EZDistribution object），
请问是怎么回事呢？多谢大家了~