DataSource is basically used to read-only the data not to store any data. You can use DataSink and update the value there. Just add 1 step as DataSink and replace "IdDataSource" with DataSink in code.
Hope, this solves your problem.
Its kind of solved my problem. I want to loop the ID into my next REST request step.
Now I have to store my IDs into DataSink Excel and Load the data (IDs) into datasource in my next step
is there any other easy way to do it ??
As per my knowledge. you cannot write anything to DataSource but you can set the property value in DataSource like this:-
def response = context.expand(${Request#Response})
testRunner.testCase.testSteps["DataSource"].setPropertyValue("Response", response)
So, here if you are getting ID's at every loop, put this code there (Do some changes in code with respect to ID) inside for loop and store the ID's at DataSource property.
Does it sound good to you?
Alumni