Change variable within the python module

[Bob Wong]

Hello!

I now want to build a timer to calculate the transmission time of Osmocom Sink 
and store it in two variables(minutes and seconds), how can I do that? I search 
the mailing list and find that it is advised to use the message but in this 
case, I cannot use a message since I just want to change the value of a 
variable. And next, I need to send the time value to another python module to 
control whether to transmit it or not at a specific time with a multiply const 
with variable value set 1 or 0. Again, I cannot use message since the module 
doesn't have a port for that. How can I achieve both of them? I search the 
Internet but still couldn't figure out how to achieve that goal. And in the 
attachment is the grc file.

Best Regards,
Bob

music_tx_hackrf.grc
Description: application/gnuradio-grc