How to create dynamic query for application or interface based on node custom properties ?

Hi,

We like to create dynamic group for some specific interface or application.

We have already add custom properties to nodes and we like to use these properties to create interface and application group.

Node have a specific custom property: DeliveryGroup.

We are able to create a Group based on this custom property, however when we want to create an interface group we can only select interface custom properties.

Is there already a way to create a group of object (anything else node) based on node custom properties ?

Cheers