def METHOD_NAME(cobj, prop, prop_units, alist, blist):
    """
    Create parameters for expression forms using A-B parameters (rational
    polynomial forms)
    Args:
        cobj: Component object that will contain the parameters
        prop: name of property parameters are associated with
        prop_units: units of measurement for property
        Alist: list of values for A-parameter
        Blist: list of values for B-parameter
    Returns:
        None
    """
    for i, aval in enumerate(alist):
        if i == 0:
            param_units = prop_units
        else:
            param_units = prop_units / pyunits.K**i
        coeff = Var(doc="A parameter for CoolProp polynomial form", units=param_units)
        cobj.add_component(prop + "_coeff_A" + str(i), coeff)
        coeff.fix(aval)
    for i, bval in enumerate(blist):
        if i == 0:
            param_units = pyunits.dimensionless
        else:
            param_units = pyunits.K**-i
        coeff = Var(doc="B parameter for CoolProp exponential form", units=param_units)
        cobj.add_component(prop + "_coeff_B" + str(i), coeff)
        coeff.fix(bval)