How to Select Range based on Variables in Excel VBA?

Hi, I'm very new to programming...

Right now I'm writing Excel macros that will sort data in accending order.

From the macro recording I have:
Range("A1:T19").Select
Range("T19").Activate
Selection.sort Key1:=Range("T19"), Order1:=xlAscending, Header:=xlGuess, _
OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, _
DataOption1:=xlSortNormal

However, I want to unselect the rows if the value for first cell of that row (Cells(x,1)) is empty. So that only the row where Range("Ax")<>Empty are selected.

I tried using variables and if... then commands but none worked. Any ideas? Thanks in advance!! =)