Library archibam tree garden works, alpha inactive with VBE

[Anonymous]

These trees free download on the platform of Graphisoft are fine.
The alpha textures internal object works with openGL, LW. But when exporting VBE, the transparency of the alpha is not taken effect.
I tried changing the GDL script but I can not. Does anyone have a solution or idea to explore.
I think it will serve at all because these trees are remarkable.
Thank you.