Forms :: Custom Bar Chart Using Rectangles - Control Height Change Direction

I am trying to make something like custom bar chart on a form using rectangles. I made 4 rectangles (BarBZ, BarBA, BarKI and BarMA) and have the following code:

Code:

Dim PctBZ As Double
Dim PctBA As Double
Dim PctKI As Double
Dim PctMA As Double
PctBZ = Me.BZ / (Me.BZ + Me.BA + Me.KI + Me.MA)

[Code] ....

It works perfectly except... the rectangles grow/shrink downwards and not upwards. As a result the bars are aligned to top, while I would like to have them aligned to bottom.