cannot get sflow to show?

We are trying to get sFlows to show up int the free netflow real time analyzer, but even after configuring our switch to send flows to the server, none of the inferfaces are showing as sending netflow data.

I went into our procurve 3500 and enabled sflow using the following:

sflow 1 destination xxx.xxx.xxx.xxx

2055

sflow 1 polling 1-24 30

sflow 1 sampling 1-24 128

Any suggestions?