After creating the two nodes for which you want to display the displacement, you should ensure that they belong to the surface.
If these two nodes are not connected to a line, it is necessary to integrate them in the mesh to be considered in the calculation with finite elements.
To integrate these objects that are not used in the mesh, click the Calculate menu → FE Mesh Settings, which opens the FE Mesh dialog box. Dans celle-ci, vous cochez la case Intégrer des objets non utilisés dans les surfaces.
Lorsque le calcul est effectué, vous pouvez afficher le déplacement de ces nœuds dans le tableau 4.2 Nœuds - Déplacements.