Many softwares which work with parameterizable objects have the ability to select different objects, and give them parameter values collectively by entering a value in their common parameter value box. For example if the objects have different value set to their common parameter, when they are both selected, the parameter box shows no value. But if you enter a value, both objects' parameter gets updated to that value. This can be done for example in Autodesk Revit, even works with different kind of objects, if they share a common parameter.
In 3ds Max the modify panel is empty if you have different objects selected. The only case this is working, if the selected objects are instances.
It would be nice, if 3dsMax could have this feature.