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
There was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
3 R, }5 n+ B. |# V, D- {swarm.analysis.EZDistributionImpl.step returns null
The process will be terminated.
(Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
! W( p2 Z6 \' _1 ~    while executing
"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
- o  E3 w& K7 ]5 swhile evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
; R+ S6 b. Q8 I9 n7 t0 G( |*** event raised for warning: WarningMessage
*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
Attempt to add null probe
4 @/ \) j3 A' @% z8 i6 z*** execution continuing...
1 `" r9 R) a3 W8 j请问第一个参数应该是什么呢 我设的是ezdist（一个EZDistribution object），
" w1 c" Z, n% G) p8 ]请问是怎么回事呢？多谢大家了~