I have written before about dynamic parameters and the fact that they are limited by default to 1,000 values. This is more noticeable when the dynamic parameter is a cascade of several columns. The cascade is pulled from a query that assembles all the valid combinations of the fields in the cascade. It is the total query that is limited to 1,000 records by default, not each field in the query. If you want to raise that limit you have to go into the registry and add a key.

There are two branches in the registry where you can make this change. One branch (Current user) makes changes that only apply to a specific user. Another branch in the registry (Local Machine) makes the change apply to ALL users.

I was making this change recently for a customer and had some trouble with the Local Machine branch. The Current User branch worked fine. What I eventually realized is that the Local Machine branch node I was using was for 32-bit computers. I am so used to thinking of Crystal as a 32-bit product that I used the 32-bit location out of habit. But you have to use a different node when you are running Crystal Reports on a 64-bit computer.  In this registry change it doesn’t matter if  Crystal is 32-bit or 64-bit, if you are on a 64-bit computer.

I updated my original article to give the correct locations for both.