How to separate textures on objects from BIMobjects

[Fadi zailah]

Hello,

I import 3D objects from Bimobject to Archicad 26, the problem is that the object arrives there but with
a single texture, for example I import a sofa: the fabrics and the legs have the same texture,
how to separate them ? otherwise I tried to import the same objects in twinmotion it does not arrive
complete, a washbasin cabinet arrives in twinmotion that with the basin without the cabinet or the reverse,
thank you in advance for helping me to solve the problem one or the other problem 

[Lingwisyer]

Unless the object is scripted / created with multiple textures, you are stuck with the single one... If the object is not parametric and just geometry, you could possibly explode the object, change the leg material, then recreate the object.

Ling.