BLACKBULLET PRASING HELP Needed from source

[texh]

i have this response code when i have a valid combo

Response Source:
login=ok&secret=e3dbdaaed39f384a960da4bd55d0

how can i phrase it?
i can use in left string secret= but i dont know what should i use on right string as the source ends at right after the data i want to capture

 

[takedownman]

login=ok&secret= shouldb e left recursive and then after that cookie there should be like a ending chracter on the website. Use that as the right recursive to parse the data