Run Business Rule in Calc Script on calc manager

How to Run business rule in a calc script on calc manager?

Hello Experts,

Please, how should I create a business rule that is capable of executing another business rule in calc script based on parameters.

For example:
There are 10 business rules and I want to execute just one of them according to the result of an IF.

So in calc script I need to call a business rule using concat and substr to form its name according to the result of the if.
Consider OEP_FS.
There are business rules

BR calc 0001 YYYY
BR calc 0001 YYYY
where param1 = 0001 and param2 = AAAA or BBBB