textInput on_change callback doesn't work in the notebook

first many thanks for the 0.11 release

I have took the server application example from http://bokeh.pydata.org/en/latest/docs/user_guide/server.html#userguide-server-output-server, it works perfectly well. The same with the notebook example. But when I adapt the server application example to run in notebook, the callback function doesn’t work anymore

first I have server running by

boken serve

then run the code in Jupyter notebook cell

import numpy as np

from bokeh.models import Button, TextInput

from bokeh.palettes import RdYlBu3

from bokeh.plotting import figure, curdoc, vplot

from bokeh.client import push_session

create a plot and style its properties

p = figure(x_range=(0, 100), y_range=(0, 100), toolbar_location=None)

p.border_fill_color = ‘black’

p.background_fill_color = ‘black’

p.outline_line_color = None

p.grid.grid_line_color = None

add a text renderer to out plot (no data yet)

r = p.text(x=, y=, text=, text_color=, text_font_size=“20pt”,

text_baseline=“middle”, text_align=“center”)

i = 0

ds = r.data_source

create a callback that will add a number in a random location

def callback(attr, old, new):

global i

ds.data[‘x’].append(np.random.random()*70 + 15)

ds.data[‘y’].append(np.random.random()*70 + 15)

ds.data[‘text_color’].append(RdYlBu3[i%3])

ds.data[‘text’].append(str(i))

ds.trigger(‘data’, ds.data, ds.data)

i = i + 1

add a button widget and configure with the call back

button = Button(label=“Press Me”)

button.on_click(callback)

text_input = TextInput(value=“default”, title=“Label:”)

text_input.on_change(“value”, callback)

put the button and plot in a layout and add to the document

curdoc().add_root(vplot(text_input, p))

session = push_session(curdoc())

session.show()

the callback function isn’t functioning