JMeter iFrame Dynamic Window Id

[bharathidasan Damodaran]

HI,

I am opening an iframe window inside my web application. While recording
the opening of an iFrame window, i see a POST HTTP Request generated for an
URL having a Dynamic Window ID like this
"/services/rest/lps/WindowLifecycleService/windows?windowId=wt-4ea5-b30d-62d4&regionId=1010&businessUnitId=1".

Everytime i open the same window, new windowId is generated. I dont see
windowid in any of the previouse responses. How do i capture this window id
before executing this POST request?

Please help me.

Thanks,
Bharathi