I am trying to draw a series of simple polylines based on cells containing
values calculated from the original user input.

There are up to 20 polylines to be drawn. Each has five set points which are
found in cells Sn:Zn of sheet "Drawing Calcs" where n is the row number which
depends on which polyline is being drawn (the first polylines coordinates are
on row 3)

I have the following code which I hoped would do this but doesn't.

Sub draw()
Dim sides As Integer
Dim i As Integer
i = 0
sides = Worksheets("Drawing Calcs").Range("B24").Value
Dim cilldwg(5, 2) As Single
Do
i = i + 1
Worksheets("Drawing Calcs").Select
cilldwg(1, 1) = Cells(i + 2, 19).Value
cilldwg(1, 2) = Cells(i + 2, 20).Value
cilldwg(2, 1) = Cells(i + 2, 21).Value
cilldwg(2, 2) = Cells(i + 2, 22).Value
cilldwg(3, 1) = Cells(i + 2, 23).Value
cilldwg(3, 2) = Cells(i + 2, 24).Value
cilldwg(4, 1) = Cells(i + 2, 25).Value
cilldwg(4, 2) = Cells(i + 2, 26).Value
cilldwg(5, 1) = Cells(i + 2, 19).Value
cilldwg(5, 2) = Cells(i + 2, 20).Value
Worksheets("Drawing").Select
Worksheets("Drawing").Shapes.AddPolyline cilldwg
Loop Until i = sides
End Sub

This brings up "Run-time error '1004'; application-defined or object-defined
error."

Excel help is not much use... can anyone tell me what I need to change?