Filtering on objects created from OpenEdge service doesn'

Hi,

I created a couple of objects using External metadata->OpenEdge Services. The objects are created correctly and I can use them.
I created a one to many relation between the object added and an existing object in Rollbase. This added a lookup field from existing object to the new one. The problem is when I try to filter the records on the new object: I get a "Error: For input string: "95FB26F4-0084-D19F-DD13-A798CCD5DC4B"" message.

The object created using the OpenEdge service has and ID and a Description (the ID is a generated GUID in OpenEdge database and is the one appearing in the message). The ID I used to define the PK in Rollbase.

Is the problem with the relation I made between the objects or the length of the field (in this case is 36 characters)?

Thank you.