Highlight Largest Amount in a row

[Supe]

I want to the largest amount listed in a row range to be highlited and
bolded. I set up the conditional format formula below, but it highlights and
bold any cell that has a number in it.

=MAX(P1841)

What am I doing wrong?

 

[bj]

highlight P1841
set formula is =P18=max(P$18$41)

 

[Supe]

Thanks

highlight P1841
set formula is =P18=max(P$18$41)