Tide Dirichlet boundary conditions

When modeling seawater intrusion affected by tidal fluctuation, on the seashore the Dirichlet boundary condition can be assigned.
But boundary node and boundary value will alter by tidal fluctuation.
How to realize it in Feflow? Or, it should be achieved by ifm programming.

Please see the description of the plug-in VaryingSaltwaterHead on http://www.feflow.info/existing_ifm_modules.html. If this does what you need, please contact our support team (support@dhi-wasy.de) for obtaining the plug-in (for free, without warranty).

thank you for your reply, i will contact to obtain this plug-in.