Abs function
Abs( number )
Returns the absolute value of a number.
The data type of the return value is the same as that of the number argument. However, if the number argument is a Variant of VarType (String) and can be converted to a number, the return value is a Variant of VarType (Double). If the numeric expression results in a Null, _Abs returns a Null.
Example
Sub Main
   Dim Msg, X, Y
 
   X = InputBox("Enter a Number:")
   Y = Abs(X)
 
   Msg = "The number you entered is " & X 
   Msg = Msg + ". The Absolute value of " & X & " is " & Y
   MsgBox Msg   'Display Message.
End Sub