I have made a simple program of Modelica. It can be ran successfully in Openmodelica. But when I ran this in Dymola, the compiler error shows that "Component type specifier Testhome.HPComponents.Motor not found  the class Testhome.HPcomponents.Motor exists, but Modelica is case-sensitive and uses scoping".

What is the reason and how can I fix it? Thank you.

Code:

model HPtest

  import Testhome;

    Testhome.HPComponents.Motor Motors;
    Testhome.HPComponents.Cop Cops;
    Testhome.HPComponents.Tes Tess;
...
end HPtest;