Clearing ASO cube on RTPs with Groovy

Summary:

I am new to EPBCS and Groovy. I have a requirement to clear partial data from ASO cube by users on recurring basis. I am trying to write a business rule which users can run to clear partial data from ASO on select RTPs. I am using clearPartialData but not able to pass RTPs to the MDX query.

Any Idea?

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Code Snippet (add any code snippets that support your topic, if applicable):

/* RTPS: {RTP_Periods} */

String sPeriod = rtps.RTP_Periods.toString()

Cube cube = operation.getApplication().getCube('ASO')

cube.clearPartialData('Crossjoin(Crossjoin(Crossjoin(Crossjoin({[${