How to Forward Data from TouchGFX?

In TouchGFX, data transfer is done as follows.

Model.hpp

uint8_t TmpA;

In Presenter.hpp,

return Get_Data()

{

return model-> TmpA;

}

Viwe.cpp

uint8_t Test;

Test = presenter->Get_Data()

I am doing the program in this way.

But I heard that I shouldn't do this.

When the model data value is exceeded in the presenter,

Model.hpp says it should be made into a function as shown below.

uint8_t Get_Model_Data()

{

return TmpA;

}

In Presenter.hpp,

uint8_t Get_Data()

{

return Get_Model_Data()

}

This is how it should be done.

Which is the right way?