Package for parametric design

In reply to Mark Curry:

Hi,
I need also my design to support two different values for same parameter under same package.
So two different instantiations will actualy hold two values for the exact same parameter in package.
(example:
package A;
localparam Tx = 5
endpackage

For one instance use value of Tx=5. for second instance, use value of Tx=4
)