In the following the "Macro1" does not work while "Macro1_1" does. I
know I got a method to make Range("VarName") update while being a
parameter in a subroutine. But could you explain to me why and if I
have done it correctly.

Option Explicit

Sub SaveData(A1, A2, A3)
A1 = 9
A2 = 8
A3 = 7
End Sub

Sub macro1()
Range("name1") = "'"
Range("name2") = ""
Range("name3") = ""
Call SaveData(Range("name1"), Range("name2"), Range("name3"))
End Sub

'--- BOTTOM ONES WORK THE TOP ONES DON'T

Sub SaveData_1(A1 As Range, A2 As Range, A3 As Range)
A1 = 9
A2 = 8
A3 = 7
End Sub

Sub macro1_1()
Range("name1") = "'"
Range("name2") = ""
Range("name3") = ""
Call SaveData_1(Range("name1"), Range("name2"), Range("name3"))
End Sub

[Second question I have a code example]

Dim Zero As Range

Sub Save_Unit_Qunatities(A1 As Range, A2 As Range, A3 As Range, A4 As
Range, A5 As Range, A6 As Range, A7 As Range)

Set Zero = Range("Zero") 'Zero is a reference variable that is 0

[Is there a way I could assign a range variable such a Zero like this
Zero = 0 ]

Call Save_Unit_Qunatities(Range("PressDocking1A_Suit_Do cking_Qty_V"),
Range("PressDocking1A_Rover_Docking_Qty_V"),
Range("PressDocking1A_Vehicle_Docking_Qty_V"), Zero, Zero, Zero, Zero)

[I have to use Zero because the problem is I can't do the following: ]
Call Save_Unit_Qunatities(Range("PressDocking1A_Suit_Do cking_Qty_V"),
Range("PressDocking1A_Rover_Docking_Qty_V"),
Range("PressDocking1A_Vehicle_Docking_Qty_V"), 0#, 0#, 0#, 0#)

[And final question when I make this call]
Call Save_Unit_Qunatities(Range("PressDocking1A_Suit_Do cking_Qty_V"),
Range("PressDocking1A_Rover_Docking_Qty_V"),
Range("PressDocking1A_Vehicle_Docking_Qty_V"), Zero, Zero, Zero, Zero)

The reference cell "PressDocking1A_Suit_Docking_Qty_V" takes on
numbers but there "numbers stored as text." I there a way I can save
them as numbers?

I would really appreciate any help in this matter,

Thanks,