Change the thread count of test plan in JMeter, at run time

Question

I want to change the number of threads for a JMeter test plan at runtime.

I have Googled my problem and found a proposed solution to use JMeter plugins. But in this

Answer 1

The short answer is: no, you cannot change the number of threads dynamically during runtime. Each thread count value is only read once when the test plan is first compiled and is not resolved again after this point, so it remains fixed.