Additional properties for custom configuration


With any new configurations that we add to the Gradle project, is there a way out to specify additional properties ? i.e. say customConfiguration is a configuration that I specify and would like the individual projects specify a value for a property (Value could be different from different projects); For e.g.

customConfiguration test:0.1-SNAPSHOT { propertyValue = 123}
customConfiguration testProject:0.1-SNAPSHOT{propertyValue = 456}

I have gradle plugin in which I would like to include the dependency based on the value of this property;

Any pointers ?