Replacement of dictionary defined as external item in .NET

One method would be to create the dictionary object and store it as a static property within a class that is available to all other classes and share it that way.

Here is a simple example that uses a string as a shared object.

       program-id. Program1 as "testsharing.Program1".

       data division.
       working-storage section.

       procedure division.
          declare myobj1 = new type MyClass1
          declare myobj2 = new type MyClass2

          invoke myobj1::InstanceMethod1
          display type sharedData::my-shared-object
          invoke myobj2::InstanceMethod2
          display type sharedData::my-shared-object
          goback.

       end program Program1.
       class-id sharedData.
       working-storage section.
       01 my-shared-object property string static. 
       end class.
       class-id MyClass1.
       method-id InstanceMethod1.
       procedure division.
           set type sharedData::my-shared-object to "Hello from instance 1"
           goback.
       end method.
       end class.
       class-id MyClass2.
       method-id InstanceMethod2.
       procedure division.
           set type sharedData::my-shared-object to "Hello from instance 2"
           goback.
       end method.
       end class.

Thanks very much Chris