Problem With Dependencies And Default Values

Dear Anyone,

Im having trouble with RS2005 with regards to dependencies of report parameters and the default value. Below is my scenario:

1st parameter:

List of Letters from A to Z
Multiple Select

2nd Parameter:

List of Names starting with the last name
Uses 1 data set for list of values and default values
Multiple Select

Steps:

Select 2 letters from the 1st parameter. This action would refresh the list of values of the 2nd parameter.
Inspect the 2nd parameter. You will notice that all values are selected.
Select another letter from the first parameter. This action would refresh the list of values of the 2nd parameter.
Inspect the 2nd parameter. You will notice that not all is selected despite the fact that the data set being used to populate the report parameter is the same as with the default values



Is the behavior of the report parameters really like this? If so, how can I make it in a way that whenever I select a new letter from the first parameter and when the 2nd parameter gets refreshed because of the depencies, all values will still be selected despite the number of times I add more values to the first parameter?





Thanks,

Joseph