BIG IP F5 sFlow with Solarwinds


i have been trying to configure F5 big ip i2800 to solarwinds, for sflow. i am using self-ip and all the other configuration are ok. in packet capture i can even observe packets being sent to 2055[slflow port]. but still on solar winds. top five conversations are not available. 

does solarwinds requires me to perform any additional sflow configuration for F5?