How to use CL_RSR_PARA change the parameter for planning sequence

Hi,

I am creating a program which will call " RSPLSSE_PLSEQ_EXECUTE" to run a planning sequence in a loop. And in that loop it will change the value of the variant which used for the planning sequence.

Simply I want to call a planning sequence many times and each time I change the parameter.

So I found the class CL_RSR_PARA. This class will read and update table RSRPARAMETRIZA to change variant. While I am not good at ABAP. So can someone help me figure out how to use the method CL_RSR_PARA=>CHANGE?

Could you please give me an example code?

Thanks!

Dongkai