Hi Marcel,
It should work because the context node WORKCENTERINF is added under interface controller of the component CRMCMP_GS_WC.
May be you should try creating a context node in your component ,and then map it like this.
iv_usage->bind_context_node
exporting
iv_controller_type = cl_bsp_wd_controller=>co_type_component
iv_target_node_name = " WORKCENTERINF"
iv_node_2_bind = " WORKCENTERINF".
Thanks,
Rajesh