Looking to either create a message box, or run a piece of macros code that contains the message box based on cell value.

Data is in M10.

If the number in there is 17 and below, would like to to run "UNDER" Macros (Which is a message box).

If the number in there is 80 and over, would like to to run "OVER" Macros (Which is a message box).

Could someone help me out?

Thanks