runtime error 438 "object doesn't support this property or method"

I have attached images of the errors that I'm getting. I feel like there shouldn't be anything necessarily wrong with this code. I'm using it to hide some rows based off a drop down list selection.
The debugger is pointing me to the line "Sheets("HARTLAND").Rows("73:150").Visible = True" as being the source of the problem. Any help would be appreciated!

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Sheets("HARTLAND").Rows("73:150").EntireRow.Hidden = True

Try replacing .Visible with .Hidden

I agree that the syntax seems inconsistent.

Lewis