Request Attribute 'null' values, is there a way to suppress them?

[RobK]

Request Attributes often show up as 'null' in the sessions screen (purple boxes below). If there is no value pulled, no name box shows up at all, but often Dynatrace considers 'null' a value and shows a request attribute name and 'null' but we don't want to see any of these. 

We can't use option 4 below to exclude 'null' since it causes other issues and we already need it in several configurations to keep other values from showing up, also regex entries don't seem to stop the problem.

[natanael_mendes]

Maybe if you put "does not contain" and leave empty 

[natanael_mendes]

or fine tuning your filter

[RobK]

Leaving it blank has no affect, what's needed is a way to suppress null from showing up on the session when there is no value. Maybe if there were two places to exclude things we could do it, but Dynatrace only offers one.