# Revision history [back]

### Why I cannot see anything when I use this wlan.fc.type filters?

Hello,

I am trying to draw a pie chart of management, control and data frames of a 10 minutes of Wi-Fi traffic. After I stop the capturing, I write; wlan.fc.type==0 for management frame, wlan.fc.type==1 for control frame and wllan.fc.type==2 for data frame to the filtering area.

However, I get a completely white window, showing me nothing out of all packages. Anybody knows why? It would be great to see a reason...

### Why I cannot see anything when I use this wlan.fc.type filters?

Hello,

I am trying to draw a pie chart of management, control and data frames of a 10 minutes of Wi-Fi traffic. After I stop the capturing, I write; wlan.fc.type==0 write;

wlan.fc.type==0 for management frame, wlan.fc.type==1 frame,

wlan.fc.type==1 for control frame and wllan.fc.type==2 and

wlan.fc.type==2 for data frame frame

to the filtering area.

However, I get a completely white window, showing me nothing out of all packages. Anybody knows why? It would be great to see a reason...