Conditional field calculator?

[MikeQuetel]

I'm interested in calculating a field value, if a condition is met.  So, for example, a GeoTagger is used to enrich my event with a value, let's call it "TRUE".  If the geotagger condition wasn't met, the field has a value of NULL.  I would like to calculate these NULLS to "FALSE".  Any suggestions?  Thanks in advance!

[MikeQuetel]

I have a working solution, doesn't seem optimal to me, but maybe this is just how things get done in geoevent.  I set a filter which captures the subset of values I want to normalize, then run a field calculator on the subset.  See screen  grab.