Data Validation :: Limit The Data Available On The List

have created a list obx using data validation. My question is, is there a way to limit the data available on the list.

Example: sheet 1
A1 A2 A3
Address A
address p
address s Date

Sheet 2
has data validation list that consists of all of A1 a named range called "address". Everything works great.
I now want to be able to limit the available choices in the list depending on what cell the user is in

example: if user is in sheet2 a1, i only want them to be able to pick address that have an "A" or "p" in cell A2 on sheet 1

I tried to acomplish this using conditional formatting, I format my named range with different colors, but the colors do not carry over to the data validation list on sheet2.