char* lowername = str_tolower (evt[1]);
action_fun function = (action_fun)xbt_dict_get(xbt_action_funs, lowername);
xbt_free(lowername);
char* lowername = str_tolower (evt[1]);
action_fun function = (action_fun)xbt_dict_get(xbt_action_funs, lowername);
xbt_free(lowername);