//searching 3D functions having name '=EB3+ET1-U1'
string str3DFunction = "=EB3+ET1-U1";
Functions3DFilter oFunctions3DFilter = new Functions3DFilter();
Function3DPropertyList oFunction3DPropertyList = new Function3DPropertyList();
oFunction3DPropertyList.FUNC_FULLDEVICETAG = str3DFunction;
oFunctions3DFilter.SetFilteredPropertyList(oFunction3DPropertyList);
Function3D[] oFunctions3D = new DMObjectsFinder(m_oEplanDemoProject).GetFunctions3D(oFunctions3DFilter);
//searching 3D and 2D functions having name '=EB3+ET1-Q1'
FunctionsFilter oFunctionsFilter = new FunctionsFilter();
oFunctionsFilter.ExactNameMatching = true;
oFunctionsFilter.Name = "=EB3+ET1-Q1";
Functions3DFilter oFunctions3DFilter = new Functions3DFilter();
Function3DPropertyList oFunction3DPropertyList = new Function3DPropertyList();
oFunction3DPropertyList.FUNC_FULLNAME = "=EB3+ET1-Q1";
oFunctions3DFilter.SetFilteredPropertyList(oFunction3DPropertyList);
IFunctionBase[] oAllWithTheSameName = new DMObjectsFinder(m_oEplanDemoProject).GetFunctions(oFunctionsFilter, oFunctions3DFilter);
//searching 3D placements
Placements3DFilter oPlacements3DFilter = new Placements3DFilter();
oPlacements3DFilter.Category = Function.Enums.Category.AreaDefinition;
Placement3D[] oPlacements3D = new DMObjectsFinder(oProject).GetPlacements3D(oPlacements3DFilter);