How to make textures transparent on the mesh.

I went through the model in blender and made the images transparent. But when I import them in game it's not transparent. Looked through the past post about this and nothing seemed to help my case since the texture is
right on the .dae. Sorry if there is a easy fix for it and I'm wasting your guys time.

 

Click on the model in the world editor, in the material editor tab there should be an option near the bottom for Advanced All Layers, in there enable alpha clip and adjust the slider, that's what I do for my mario kart maps at least

 

It worked but when I went back into the map after saving it reset it.

 

There's a separate save button in the material window

 

Oh ok thank you for helping me

 

No problem!