Dynamic Named Ranges used create a Chart

I'm trying to create chart using dynamic named ranges. My coding returns an error on the Bolded line:
Run-Time error '1004': Application-defined or object-defined error
My named ranges are:
Bat_Perc scope: Raw Data =OFFSET('Raw Data'!$B$2,0,0,COUNTA('Raw Data'!$B:$B),1)
Date_Time scope: Raw Data =OFFSET('Raw Data'!$A$2,0,0,COUNTA('Raw Data'!$A:$A),1)

It seems Excel does like my named ranges. Could the scope setting maybe need to be changed to Workbook?
I'd appreciate any help anyone has to offer. Steve

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AlphaFrog, Thank you very much. When I tried to do what you suggest, excel wouldn't let me enter my named ranged for the X or Y axis, to be able to see what would be recorded. So I knew that the problem had to do with how the named range was entered, not a problem with the named range itself. It was the Apostrophies (') that were missing around my sheet name. I had:

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and I should have had

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That was it. The plot on my chart works. Your suggestion got me there. Thank you. Steve