Defined Names doesn't seem to work

[o-o00o-o]

Hi guys, not sure if I'm doing something wrong - docs don't seem to cover this

doing this through powershell so I can interact with it easily while I'm playing

GetCellRangesByDefinedName for "AllColumns" "PatternName" or "Readme" returns null

what am I missing? Really need to use the Defined Names to find the correct ranges in my spreadsheet so I can access simply

[mrjono1]

only basic support of defined names is currently implement, you are welcome to implement more advanced usage