Not sure of your exact implementation but it may be as simple as just placing a filter on your triggered document while in the developer tool?
From the help “ontopic” in the developer tool is the following description of the functionality…
Building Trigger Conditions
The lower half of the editor displays information about the condition selected in the upper half of the editor. Use the editor to build conditions.
Displays the name of the condition.
Enter the fully qualified name of the service to be invoked by the Integration Server when it receives one or more documents that satisfy the trigger condition, or use the browse button to select the service.
Select or enter the names of the publishable document types to which you want the trigger to subscribe. You can add one or more publishable document types by using the create button . in the toolbar. To change an already existing document type, click next to the Document Type column.
Enter a filter, which determines the criteria that you want the Integration Server to apply to each instance of this publishable document type. Use the browse button next to the Filter column to specify or edit a filter.
Select the specified join type for the trigger condition. The join type determines what action the Integration Server takes if it receives all, any, or only one of the specified documents. Note that a trigger can contain only one join condition. These options are enabled only when you have specified more than one publishable document type.