That's great to hear @umesh_gattem ! 

Are you able to provide some example code for your predict function?

I have tried specifying the params as part of the data_json request, but they are not being recognised by the model when it is called this way.

For debugging, I return the params input as well as the individual values for my custom keys, but the params input is returned as {} and both custom keys are None...
However, if I don't specify the params in my JSON request, the default values are correctly returned.