Change the parameters of a preference object
pref_change_params(pref, ..., params = list(), label = NULL, players = 1:2, numPlayers = length(players))
Other Modify Game: game_change_param,
game_copy,
game_set_preferences
Other Preferences: game_fix_action_preferences,
game_prefer_outcomes,
game_set_preferences,
pref_custom, pref_envy,
pref_heterogeneous_players,
pref_ineqAv, pref_lossAv,
pref_payoff