copy conditional format, change reference cell

[BeerBeer101]

this seems as though it should be easy:

my conditional format is:
if value in A1 is less then value in B1, colour it Yellow

How can do i copy that down for 2, 3, 4????
anytime i format paint it, the reference cell remains B1

thanks

[BeerBeer101]

Figured it out...
Conditional format, Cell value less than, formula, colour:
=($B1:$B30)

this is assuming 30 rows of course. this would then be format paintable Left/Right but would always reference $B.

[TMS]

Always good to work it out for yourself . Thanks for sharing your solution.

Just for information, you don't need the brackets.