Text above players' head: transparancy

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Jeroen

	DeleteChatBalloonFromPlayer(whichPlayerIDSaidIt)

	b.chatBalloon = New chatBalloon
	b\timeToLive = timeToLive
	b\entity = LoadSprite("images/chatBalloon.tga",2,theParent)
	b\textEntity = CreateSprite(b\entity)
	b\net_id = whichPlayerIDSaidIt
	

	
	img = CreateImage(128,64)
	SetBuffer ImageBuffer (img)
	ClsColor 255,255,255
	Cls
	Color 0,0,0
	drawText(x2d,y2d,128,64,theText$,4,0)	
	MaskImage img,0,0,0
	b\texture = CreateTexture(128,64,4)
	SetBuffer TextureBuffer(b\texture)
	DrawImage img,0,0
	SetBuffer BackBuffer()
	EntityTexture b\textEntity,b\texture
	Color 255,255,255
	
	; tekst op ballon
	MoveEntity b\textEntity,1.3,1.1,2
	HandleSprite b\textentity,-1,-1
	ScaleSprite b\textEntity,6,2.5
	SpriteViewMode b\textEntity,1
	; ballon
	MoveEntity b\entity,0,1,0
	HandleSprite b\entity,-1,-1
	ScaleSprite b\entity,8,4
	SpriteViewMode b\entity,1

What the above does: create a balloon texture, and place text on a second texture.(it is written to a texture).

The problem: I want the background of the second texture (text) to be transparant. Only the text needs to be shown.
As you can see, I tried masking, but I still get an opaque background.

Anyone?

Thanks!