Silk4J: Null Pointer Exception in Keyword Driven Test

Hello there,

I need help.

The method works as a test method. But it doesn't work as a keyword driven test. I got the following series of errors.

java.lang.RuntimeException: java.lang.IllegalArgumentException: argument type mismatch
at com.borland.silk.keyworddriven.runner.java.InvocationContext.invoke(InvocationContext.java:71)
at com.borland.silk.keyworddriven.runner.java.JavaRunner.executeKeywordImpl(JavaRunner.java:97)
at com.borland.silk.keyworddriven.engine.AbstractKeywordRunner.executeKeyword(AbstractKeywordRunner.java:40)
at com.borland.silk.keyworddriven.engine.AbstractKeywordRunner.executeStep(AbstractKeywordRunner.java:211)
at com.borland.silk.keyworddriven.engine.AbstractKeywordRunner.executeKeywordSequence(AbstractKeywordRunner.java:146)
at com.borland.silk.keyworddriven.engine.Engine.run(Engine.java:266)
at com.borland.silk.keyworddriven.engine.Engine.run(Engine.java:204)
at com.borland.silktest.jtf.keyworddriven.KeywordRunner.run(KeywordRunner.java:53)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at com.borland.silktest.silk4j.playback.Silk4JRemoteTestRunner.main(Silk4JRemoteTestRunner.java:48)
Caused by: java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.borland.silk.keyworddriven.runner.java.InvocationContext.invoke(InvocationContext.java:58)