Assign a bucketset to the output variable of a Business Rule Decision Function

To assign a bucket set to the input variable of a business rule decision function, we can do the same while creating the rule itself. But to assign a bucketset to the output variable, we need to update the fact of the output variable.
1. Open the rules designer
2. Click on Facts.
3. Select the output variable for which we need to assign a bucketset.
4. Click on Edit.
5. In the list of Bucketset, select the appropiate bucketset and click OK.

Now in the rule, in the Actions part, when we assert or modify the output variable message, we should get the bucketset as a dropdown.