I named the range a1:a2 on a new and empty sheet to “JEFF” (no quotes) - this is the range I want to conditionally format. Then I opened Format > Conditional > Manage… > Add and entered “JEFF” (no quotes) into the Range: box at the bottom. The Range: box immediately turned Red (apparently indicating an invalid entry). If, instead of “JEFF”, I enter a1:a2 it is accepted. Does this mean that calc does not support conditional formatting of named ranges? Thank you…
Cross posted at Conditional Format a Named range (View topic) • Apache OpenOffice Community Forum where one response has been made.
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You could put it as an enhancement request/bug, see How to Report Bugs in LibreOffice - The Document Foundation Wiki
As a workaround, use the Name Box to select the range, then choose menu