 In particular, Pâris-Duverney directed "l'opération du visa" - the systematic management of payments to bondholders.In December 1721, he acquired the lordship of Plaisance (near Nogent) and undertook the reconstruction of the château there, turning it into a residence designed according to his own specifications.Under the ministry of the Duke of Bourbon, in which he served as principal secretary, he enjoyed the support of the Marquise de Prie and proposed a new tax, the 'cinquantième' (2% levy) as well as a number of measures which provoked the opposition of both the Parlement of Paris and the nobility.