function  MyNewMaterial=setMaterial(MyMaterial,MyGeometryName,GeometryDimenssion )
global model
MyNewMaterial=MyMaterial;

if GeometryDimenssion==2;
for jM=1:length(MyMaterial)
    myNameTmp=['mat' MyMaterial(jM).name];
model.material.create(myNameTmp);
model.material(myNameTmp).name(MyMaterial(jM).name);
model.material(myNameTmp).propertyGroup.create('RefractiveIndex', 'Refractive index');
model.material(myNameTmp).propertyGroup('RefractiveIndex').set('n', {num2str(MyMaterial(jM).n)});
MySelection=model.selection([MyGeometryName '_' MyMaterial(jM).Object2Sel{1}]).entities(2);

 for jMM=2:length(MyMaterial(jM).Object2Sel)
     MySelection=[MySelection model.selection([MyGeometryName '_' MyMaterial(jM).Object2Sel{jMM}]).entities(2)];
 end
 
 MyNewMaterial(jM).Selection=MySelection;
model.material(myNameTmp).selection.set(MySelection);
end

disp('material set 2D')
end


if GeometryDimenssion==3;
% set materials
for jM=1:length(MyMaterial)
    myNameTmp=['mat' MyMaterial(jM).name];
model.material.create(myNameTmp);
model.material(myNameTmp).name(MyMaterial(jM).name);
model.material(myNameTmp).propertyGroup.create('RefractiveIndex', 'Refractive index');
model.material(myNameTmp).propertyGroup('RefractiveIndex').set('n', {num2str(MyMaterial(jM).n)});
MySelection=model.selection([MyGeometryName '_' MyMaterial(jM).Object3Sel{1}]).entities(3);
 for jMM=2:length(MyMaterial(jM).Object3Sel)
     MySelection=[MySelection model.selection([MyGeometryName '_' MyMaterial(jM).Object3Sel{jMM}]).entities(3)];
 end
 
  MyNewMaterial(jM).Selection=MySelection;
model.material(myNameTmp).selection.set(MySelection);
end
disp('material set 3D')
end

end