The entries of the internal list are either digits (0-x) or expressions.
max_number_one_internal_entry(one_internal_entry)get_number_prms(flex_prms_obj)
the largest digit in the entry or of the linear_list in the supplied flex_prms_obj (0 if there are only expressions). The largest number of the linear_list corresponds to the number of model parameters.
one entry of multiple conditions
a list stored as a flex_prms object