ETL execution from BI server

HI all,

I am trying to Execute a jar file from ETL - This works fine .
When i am trying to call same ETL from xaction - This is showing errors as ,

ERROR 05-02 09:58:28,491 - Call Data Importer - org.pentaho.di.core.exception.KettleValueException:
Javascript error:
TypeError: Cannot call property runImageImpoter in object [JavaPackage com.MyTest.Data.Importer]. It is not a function, it is "object". (script#5)

at org.pentaho.di.trans.steps.scriptvalues_mod.ScriptValuesMod.addValues(ScriptValuesMod.java:458)
at org.pentaho.di.trans.steps.scriptvalues_mod.ScriptValuesMod.processRow(ScriptValuesMod.java:689)
at org.pentaho.di.trans.step.RunThread.run(RunThread.java:50)
at java.lang.Thread.run(Unknown Source)
Caused by: org.mozilla.javascript.EcmaError: TypeError: Cannot call property runImageImpoter in object [JavaPackage com.MyTest.Data.Importer]. It is not a function, it is "object". (script#5)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3557)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3535)
at org.mozilla.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3563)
at org.mozilla.javascript.ScriptRuntime.typeError3(ScriptRuntime.java:3589)
at org.mozilla.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:3649)
at org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2186)
at org.mozilla.javascript.gen.c21._c0(script:5)
at org.mozilla.javascript.gen.c21.call(script)
at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:401)
at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3003)
at org.mozilla.javascript.gen.c21.call(script)
at org.mozilla.javascript.gen.c21.exec(script)
at org.pentaho.di.trans.steps.scriptvalues_mod.ScriptValuesMod.addValues(ScriptValuesMod.java:377)
... 3 more

Any help would be highly appreciated .

Thanks,
Surya