Change plotted data (FreehandDraw) from python

When using this code:

import holoviews as hv
from holoviews import opts
from holoviews import streams
hv.extension('bokeh')
path = hv.Path([])
freehand = streams.FreehandDraw(source=path, num_objects=3,
                                styles={'line_color': ['red', 'green', 'blue']})

path.opts(
    opts.Path(active_tools=['freehand_draw'], height=400, line_width=10, width=400))

I can see the data in freehand.data but if I want to problematically change it, how can I do it?
Thanks
change_data

I think you may want to update the path.data instead