Change range in chart from userform input

Question

I have made a userform so a person can input a start date and an end date so a line graph will display the desired information. Currently I have everything working except the range update syntax.

I am saving the address of the start date's data as Ad and the address of the end date's address as Add (Both are strings).

I then try to set the range using these but I am doing something wrong. here is the code.

Dim CellX1 As Integer
Dim CellY1 As Integer
Dim CellX2 As Integer
Dim CellY2 As Integer
Dim Ad As String
Dim Add As String

Sheets("Data").Activate
Cells(CellY1, CellX1).Activate
Ad = ActiveCell.Address 'set start address

Cells(CellY2, CellX2).Activate
Add = ActiveCell.Address 'set end address

Sheets("Graph").Activate                                   

ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection.NewSeries
ActiveChart.SeriesCollection(1).Name = "=""A3"""

This is the lines of code that i cant get to work:

ActiveChart.SeriesCollection(1).Values = "=Data!$Ad:Add"
ActiveChart.SeriesCollection(1).XValues = "=Time!$E:$F"

Answer 1

Should be able to Set those as the Range version. You also will do better to assign the series variables to actual Ranges instead of addresses as strings. Really, you should just Set directly which is what I have below.

Full code should be something like:

Dim CellX1 As Integer
Dim CellY1 As Integer
Dim CellX2 As Integer
Dim CellY2 As Integer
Dim Ad As Range
Dim Add As Range

Set Ad = Sheets("Data").Cells(CellY1, CellX1) 'set start address    
Set Add = Sheets("Data").Cells(CellY2, CellX2) 'set end address

Sheets("Graph").Activate

ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection.NewSeries
ActiveChart.SeriesCollection(1).Name = Range("A3")
ActiveChart.SeriesCollection(1).Values = Range(Ad, Add)
ActiveChart.SeriesCollection(1).XValues = Worksheets("Time").Range("$E:$F")

Note that I changed the type of variable for Ad and Add to Range. This makes it easier to create a start/end Range for the chart.