I have my XML Body data (attached screenshot below),
From screenshot you can see value 123456789 in Signature.
I'm looking to make 123456789 a dynamic variable value, So that JMeter automatically gets that value from server whenever I run script.
I'm looking something like Regular expression extractor but for SOAP request.

Configure it as follows:
signature//*[local-name()='aSignature']/text()Refer the extracted value as
${signature}where required.References:
local-name()function