I would like to have resistances in hierarchical block, which's value has to be changed without entering into hierarchical schematics. Or even two/more resistors who's values will depends on single input parameter(like PARAMETERS option in Orcad/Pspice).
Something very simple which you can use to change capacitance, resistance, and inductance is have a voltage(or current) controlled resistor/inductor/capacitor. Passing a voltage thourgh the blocks will change these variable loads as you wish (you can set it anything like 12.5kohms per Volt for example). You can find these components under Basic-Virtual in the Basic Group. Hope this helps.