I have tried several times following the tutorial to add vents to the sanitary system but I cannot seem to apply a filter to the vent piping so the lines are dashed. I get as far as changing the elbow to a tee and attaching a 2" pipe 14' long. Then I create the filter for the Sanitary Vent but the vent does not change (it stays black) see attachment. The filter rules do not seem to work.
The System Type in the element properties for the vent pipe is 'undefined'. There is no Sanitary Vent System Type and if I change it to Sanitary the vent pipe takes on the properties of Sanitary piping.
What Am I doing wrong?
