In each item in production having a category property if you specify the value . using the value you can able to filter using Category.

Step 1: Create a custom persistent class to pass

Example :

Class FileRequest Extends %Persistent

{

Property FilePath As %String(MAXLEN=1000);

Property FileName As %String(MAXLEN=1000);

}

Step 2: Create a custom business operation and inside that request argument please use the above class.

Step 3: now modify the ..Adapter.FilePath using request.FilePath and ..Adapter.FileName using request.FileName

Step 4: Before sending to business operation create the object for the request class and pass it as the first parameter in SendRequestSync or SendRequestAsync.