The following script demonstrates how to automatically update all imported pressures after the mesh has been generated.

def after_mesh_generated(this,mesh_object):# Do not edit this line
    """
    Called after mesh has been generated.
    Keyword Arguments : 
        this -- this python object
        mesh_object -- The mesh object that was generated
    """
    
    # This script shows how to automatically update all imported pressures
    # after the mesh has been generated
    
    # The script is working with 'after mesh generated' callback
    # The Python code object should be located under the model
    
    # Note: the script may not work if you are using shared licenses

    # Once the mesh has been generated, get all Imported Pressures to automatically reimport them
    # Be careful this could be a time consuming task if many imported loads need to be updated
    importedLoads=ExtAPI.DataModel.GetObjectsByType(DataModelObjectCategory.ImportedPressure)

    # Loop over all imported pressure and import load
    for ild in importedLoads:
        ild.Activate()
        ild.ImportLoad()