I have a macro

Sub TestMacro(X,Y)
....calculations based on X and Y values
End Sub

By putting the "X,Y" in the macro, does this make it a function. Because
when I try to look for the macro using the macro button on the toolbar the
function "TestMacro" does not show up. It shows up when I remove the X,Y.
Do you know what has changed? Also i this a good way to program, I want to
be able to input values for X and Y so I thought this would be good since I
wouldn't have to keep changing the "TestMacro".

Sub macro1()
X = 7
Y=5
Call TestMacro(X,Y)
End sub