Different JSON structure in form


I'm new to bonita and JSON, I read a lot of posts on the forum but found no relevant infos on my problem.

I'm using a REST GET connector to fetch some infos from a webservice.
I have a process variable of HashMap type to witch I affect the result of the REST GET with "bodyAsObject".

If I test the webservice (with postman chrome extension), the JSON looks like :

Error setting Business Object property

Hello All,

We have a business object loaded into a business variable from the database at the start of the process.

At some point, we have a simple service task that has a single operation which sets an object property to the Integer 1:

newIssue - setStatus - Constant java.lang.Integer:1

However, this task fails with the following stack trace: