Answered question

"Data1": "Filename",
"Data2": "123",
"Data3": "456"

In this example I want to extract the 123. These 3 lines of code appear multiple times, but I need to include multiple lines to ensure I get the correct Data2 value. Therefore I must include the Data1 in the boundary.

I would like my left boundary to be:
"Data1": "Filename",
"Data2": "

However this does not work. How do I choose a boundary with multiple lines?