Hi there,
I will assume that you are using JSON Tool
In this plugin, check out "Store To Form" and "Store To Workflow Variable" section.
There's also a demo app to digest the returned sample JSON data in the same article if you scroll towards the end.
You can turn on the debug mode to look at how your data is structured, and massage them accordingly.
Alternatively, you can also check out the source code of JSON Tool itself directly at https://github.com/jogetworkflow/jw-community/blob/7.0-SNAPSHOT/wflow-core/src/main/java/org/joget/apps/app/lib/JsonTool.java#L162
Hope this is helpful.
Thank you.
Hugo
