regex - Viewstate Replacing error. [ViewStateException: Invalid viewstate. ] -

tried jmeter: how know why regular expression extractor in jmeter not extracting data still not able replace view-state, throwing [viewstateexception: invalid viewstate. ] error . please check attachment , script has not _eventvalidation . enter image description hereviewstate

viwstate2

as observing attached image

you need pass same `reference name` value of __viewstate in next request