Selection sequence via published parameters

Hello, I have in front a reader SpatiaLite composed of different layers (hydrographic basins, communal limits, regional limits ... "). I want to propose to the end user a list of extraction options (list of watersheds, list of municipalities, list of regions ...) according to a type of previously selected right-of-way ("watersheds", " regions ", ...).

I arrive with a published parameter applied on a transform tester to select the type of footprint stored in the format attribute "fme_feature_type" and store it in a new field "Emprise" with the "conditional attribute values" in an AttributeManager.

But I do not succeed after to chain a selection on the selection via a second published parameter. The selection of the right of way is not filtered according to the first choice. Thank you in advance for all your advice.