Possibility to change Material Property with Blutilities

I created a script to automatically create materials out of textures, connect everything up, set the sampler type and the sRGB values of the textures. But I´m currently not able to change the MaterialProperty Blendmode for the material if there is an opacity mask. The MaterialProperty is read only, I´m only able to get it.
It would be awesome if you can make this property read and write so we can modify it with the blutility system or with python scripting.