Using VBA to Reference a Dynamic Range based on Last Cell of an Adjacent Column

Hello,

I am currently trying to refer to a cell range defined as being from Cell K2 down to the same row as the last cell in Column J (e.g. If the last cell in Column J is J1455, the range would be "K2:K1455").

I have tried using the following syntax but keep getting an error (Runtime Error 1004: Method 'Range' of object '_Worksheet' failed):

Set rMonthRng = Sheet2.Range("J2", Range("J65536").End(xlUp)).Offset(0, 1)

I don't understand this as I have used the same structure previously in other workbooks and it worked fine.

Is anyone able to explain to me what I am doing wrong?

Thank you!