Mininet - minievents

Hi! I am simulating a traffic on a network in mininet. I need to change bandwidth of the links during the traffic. The problem is, that after I get my data and calculate the bandwidth from details from ports on switches, the bandwidth is not, what it is supposed to be. I need to check, whether framework minievents is changing bandwidths correctly or not. Is there a way for me to write bandwidths of links into terminal? If so, how? I implemented the minievents framework from cgiraldo's github. It is implemented on more switches with one loop, so I am also using STP. I am using a RYU controller