I have a custom variable set for all visitors; for our registered users it's some value, for unregistered users, it's empty.

I can find unregistered users in an advanced segment using the settings Exclude Custom Variable (Value 02) Matching Regexp .+ -- works brilliantly.

But I need a report of unregistered visitors for a dashboard, and tried to do the same thing with a filter. I have a metric of Visits and a dimension of something all vistors will have (e.g. Browser). My filter is identical to the one in the advanced segment, but ... not brilliant. I get no visits. I have tried to Include with a regex ^$ but no love there, either.

Any ideas what I am doing wrong?

regex google-analytics reporting
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