Enabling Prescribed Field for AM Geometry

[cagrierciyes]

The problem and the context

I tried to use Prescribed Field block via AM-geometry, and it seems that it accepts the definition of 3D profile for a given mode (e.g., Bt_m_mode_1), but only calling it once, so at the initialization step. This behaviour is not expected for a prescribed field, which should be called each timestep.

The request

I would like to be able to use uncoupled spatio-temporal prescribed field in AM-geometry too, as in Cartesian geometry.