It looks like Firefly accepts "" for column name without space from API, but does not in the UI input. This caused a bug in NED UI, described in DM-15148. 

Since Firefly requires column name to be put in "" if it has space, maybe it should allow any column name to be in "". 

9/6/2019 Other issues addessed:

• Fixed filter bug, described in DM-15148: error when chart is filtered after another table filter is applied (for example on Units)
• Quoted columns should be considered valid in chart options
• Error type in chart options should match the data
• When error is empty, no error bar should not be displayed (0 length bar was displayed before)
• FilterEditor should allow filters update without clearing expression-based filters.
• Allow filter update by changing free-form filter in FilterEditor