GET_SINGLE preprocessor instance_id is Boolean instead of an Integer

[cryarchy]

I'm using Flask-Restless==0.17.0 and I receive a Boolean instance_id to my GET_SINGLE preprocessors. i.e; when I visit an example URL http://localhost:5000/api/account/3 the preprocessor function:

def get_show_id(instance_id=None, **kwargs):
    print (instance_id)

prints out True. Also, all GET_SINGLE URLs point to the same single record in my database.

[jfinkels]

Thanks for the report. Can you please provide a minimal working example demonstrating this behavior so I can determine where the issue is?

[jfinkels]

Closing due to lack of information.