AlphaBlend

Hi. I'm new to Blitz Max, moving up from Blitz3D.

I was fiddling with some of the animation commands but I am encountering a lot of difficulty with getting the alpha to display properly. The alpha layer seems to just appear white despite that the png file has a transparency layer in it. What am I missing, any help would be greatly appreciated.

Here is the relevant code:

Notes: Backdrop and Player are both custom types with Image as a simple TImage type storing the image files...

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	'Setup Backdrop
	AZTEC_NIGHT:Backdrop = New Backdrop
 	AZTEC_NIGHT.Image = LoadImage("media/AztecNight.jpg")
	'Setup Player
	USER:Player = New Player
	USER.Position = 400 
	USER.Image = LoadAnimImage("media/DragonAttack.png", 128, 128, 0, 6)

End Function 

Function DrawAll()
	'Draw Backdrop
	'SetBlend SOLIDBLEND 
	DrawImage(AZTEC_NIGHT.Image, 0, 0)
	'Draw Player
	SetBlend(ALPHABLEND) 
	DrawImage(USER.Image, USER.Position-64, 600-128)
End Function