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
7 l, |3 z4 R9 a9 d- gThere was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
& _  Y* z) h. ^, o% }swarm.analysis.EZDistributionImpl.step returns null
' y3 M" z7 i' }8 Q3 yThe process will be terminated.
, ~$ t  E8 ^3 J, y8 x( E6 W4 Q  ^(Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
( @. ~/ s1 Z: }' l& Y    while executing
"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
while evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
& |# h1 J/ H- W7 e*** event raised for warning: WarningMessage
*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
Attempt to add null probe
*** execution continuing...
6 Y4 {4 D  M1 a& Z7 q+ b. 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~