[RESOLVED]getting problem with a groovy script

hi

version: Soap UI 3.0

the script in groovy step

     testRunner.testCase.addTestStep( "properties", "another step" );
   
adds a new propeties step in my case

but at the same time

testRunner.testCase.addTestStep( "Groovy Script", "Delay" );

is not adding a new step.
why?

please help !!