Workday formula on a Conditional Formatting

Hello, I am having an issue, because aparently workday formula does not work in conditional formattings.
I have the two formulas below to use in conditional formattings, but I can't figure out how to re-write them so that Excel will allow me.

=AND($B3="OPEN PO";(WORKDAY($AA3;4;holidaysfridays)=TODAY());(WORKDAY($AA3;3;holidaysfridays)=TODAY()))

=OR(AND($B3="OPEN";(WORKDAY($AA3;0;holidays))>=TODAY()-2;(WORKDAY($AA3;0;holidays))<=TODAY()+200);$Y3>$AA3)

Thanks for helping me before and sorry for posting previously in the wrong topic.