I am very new to excel vba and am trying to solve a problem in a coworkers code which has been dumped on my desk. It's just one line. We want the prior month to be inserted into cell I2 of a spreadsheet, but the following produces a debug error. I suspect it's the -1 portion because If I take that out the code will produce the value "JANUARY" in cell I2. Any suggestions would be greatly appreciated. Thank you!

Range("I2").Val ue...