How to create and rename a bus?

My actual question is: How can I assign a (new) name to a variable, whose name I do not know explicitly?

But maybe some one has a much nicer way for the complete thing I want to do:

- I have a nested struct

- I want to create a bus structure from it

- I want this bus to have a specific name

For now, this is my way to do this:

myStruct = struct();
myStruct.a.aa = 1;
myStruct.a.ab = 2;
myStrcht.b.ba = 3;
myStruct.c.ca = 4;

busInfo = Simulink.Bus.createObject(myStruct);
myBus = eval(busInfo.busName);

Is there a way to avoid eval()?

Or is there a way to specify, how the bus should be named in busInfo (mybe even the sub busses)?