using grocery crud?

I have been using grocery crud for a few years. I am actually starting to "button up" my app. Are they still actively supporting? If not, what crud is recommended with CI3? 

Also,
I am trying to use:  $szFourparttest =  $stateParameters->data['fourparttest']; in a grocery crud callback  before update. I can see that data['fourparttest] equals 3 in my debugger. Yet the line above always yields '0'. Why?

proof that an old dog can learn new tricks