how to change the user defined variable?

[Tong Sun <su...@gmail.com>]

Hi,

How do you change the user defined variable?

The same question has been asked before, like under
https://guide.blazemeter.com/hc/en-us/articles/207421395-Using-User-Defined-Variables,
but I found no good answers.

Unlike placing them under Thread Group or Sampler, I need to

- define UDV under the Test Plan, and use those UDVs to
parameterize/control my Thread Group.
- and change them after UDV definition but before applying to the Thread
Groups

For e.g., pseudo code:

if isSpecifyingThreadLifetime then LoopCount = 1000000

How can I do that? Thx!

Re: how to change the user defined variable?

[Dmitri T <gl...@live.com>]

Not sure whether this answer is "good" enough for you, however you can 
do something like:

 1. Add setUp Thread Group
    <https://www.blazemeter.com/blog/thread-group-jmeter> to your Test plan
 2. Add JSR223 Sampler
    <https://jmeter.apache.org/usermanual/component_reference.html#JSR223_Sampler>
    to the setUp Thread Group and use the following code there:



defengine=engine=ctx.getEngine()
deftest=engine.getClass().getDeclaredField('test')

test.setAccessible(true)

deftestPlanTree=test.get(engine)

defthreadGroupSearch=neworg.apache.jorphan.collections.SearchByClass<>(org.apache.jmeter.threads.ThreadGroup.class)
testPlanTree.traverse(threadGroupSearch)
defthreadGroup=threadGroupSearch.getSearchResults().find{threadGroup->threadGroup.getName()=='name 
of your thread group here'}
if(threadGroup.getPropertyAsBoolean('ThreadGroup.scheduler')){
threadGroup.getSamplerController().setLoops(1000000)
}

On 7/24/2022 5:54 PM, Tong Sun wrote:
> Hi,
>
> How do you change the user defined variable?
>
> The same question has been asked before, like under
> https://guide.blazemeter.com/hc/en-us/articles/207421395-Using-User-Defined-Variables,
> but I found no good answers.
>
> Unlike placing them under Thread Group or Sampler, I need to
>
> - define UDV under the Test Plan, and use those UDVs to
> parameterize/control my Thread Group.
> - and change them after UDV definition but before applying to the Thread
> Groups
>
> For e.g., pseudo code:
>
> if isSpecifyingThreadLifetime then LoopCount = 1000000
>
> How can I do that? Thx!
>