String operations on a parameter value as input to another parameter

Hi Suresh,

I have parameter A which is populated by extracting data from a previous Response. I now want to create parameter B which will contain a substring of parameter A and use this in next Request. Is this possible and how do we do this?

I'd accomplish this by defining another data selector. For example, if I need to extract the first two characters from the value of the __VIEWSTATE parameter, I will use the following regular expression and mask:

\sname\s*?\=\s*?"__VIEWSTATE"[^^]*?\svalue\s*?\=\s*?"((.{2}).*?)"[^^]*?>



$2

Actually, this is a slight modification of the regular expression that is used to extract the whole value of the __VIEWSTATE parameter. Here's the original expression and mask:

\sname\s*?\=\s*?"__VIEWSTATE"[^^]*?\svalue\s*?\=\s*?"(.*?)"[^^]*?>



$1

Additionally, is it possible to output the values of captured variables into a text file? How does one do that?

Currently, there's no way to do this. If you share a use case, we could consider this as an improvement idea.