How to copy Test Step field value into Test field while execution

Hi,

While Test execution (TestSetTest) one of the step field value needs to copy and paste into Test field.

If any one experience this, please let me know.

For Ex: If any specific Test Step is passed and a User field is updated with a value (Not blank), then the value of the user field suppose to be copied back to one of the test instance (TestSetTest) field in Execution grid.

For the same I tried with below piece of code under Manual Runner Script with 2 events are:

1. Step_FieldCanChange(FieldName, NewValue)
2. Step_FieldChange(FieldName)

Sample Code:
  If Step_Fields("ST_STATUS").Value = "Passed"  Then
     If Step_Fields("ST_USER_02").Value <> "" Then
          TestSetTest_Fields("TC_USER_01").Value = Step_Fields("ST_USER_02").Value
          TestSetTest_Fields("TC_TESTER_NAME").Value = ""
     End If
  End If

Thanks In Advance,

Subbarao P