How to send a Bang or Button message to a Pi

Hi . .

See the test patch attached. I am trying to figure out the best way to send a bang or button press to a RNBO patch via OSC on the Pi. I have a param named B1 which gets a value of 0 or 1 depending on a button press. Press the button, get a 1. Otherwise, 0. I have a select 1 attached to the param output in the RNBO patch but it never will bang. I've tried a trigger bang, just sending a 1, etc . . no dice. I can see the Param B1 in the Web interface and see it change from 0 to 1 when a button is pressed. It just never gets into the patch to, in this example, to bang a random object. The values on the right side of the web slider change the but the slider graphic doesn't move. And, if I use the web slider for b1 to scroll from 0 to 1 it changes the sound. So i must be missing something about direct parameter values in rnbo?

It works fine when testing on the Mac laptop with a prepend and a 0 or 1 value going into the rnbo object.

Should I be using the enumeration part of the param object to do this?
Right now I have /rnbo/inst/0/params/b1/ as the OSC message. Values are 0 or 1. They are floats.

Anyway, just sorting out the best way to send button presses to RNBO via OSC on the Pi.

Thanks!!