Use of GetReference() method of Dictionary object

Hello,

The following code should look for the reference of the given text "Reset", inside the first "Secondary Dictionary" of the project

string sText = "Reset";
Dictionary oDic = m_oEbProject.Configuration.SecondaryDictionaries[0];
string sReference = oDic.GetReference(m_oEbProject, sText);

There is a "to many data in dictionary exception" as soon as any of the other EB-Dictionaries (e.g. the project dictionary) also contains the text "Reset" .

How can I narrow the search to the oDic object only.

(Using API of EB Version 6.6.1)

Thanks