errors while using BPF in filters

[tanaxer01]

Hi, while trying to capture some traffic in polymorph 2.0.5, I added a basic filter and I got the following error:

At first I thought it was a tshark error, but this filter works fine in tshark Any ideas why is this happening ??

Thanks!

[Esgarothh]

i solved it withouth the quotes, the filter has to be on BPF notation