jmeter for capturing system generated dynamic values

I am using JMeter for a real estate application when I am selecting a plot it is generati开发者_StackOverflow社区ng a dynamic value like this 1305003402565. It is incrementing like this 1305003280751 per request to request I need to capture this value and I am not able to find it in the source code.

You may be able to force your application to show the dynamic value in the source code by requesting the page as a GET (instead of POST). Then, using Tree View, copy the source into your favorite regular expression extractor to write your regex to extract the value.