Using formula for conditional formatting

Hello,

Excel 2013
I need to add an if formula that creates conditional formatting and I get the basics of it but my formula is not working
It's a financial ledger where column B is where cheque # are typed
I want column H to highlight if there is a cheque # in B
Then I want the Highlight to go away if I type any text in H
This way I know there are cheques I have not reconciled

I'm using this formula under the conditional formatting and it's not working
=IF($B5<>"",$H5)

Thanks!