Linking formulas to subreports BW criteria

I'm using the latest version of crystal reports 2013.  My datasource is BW Hana stored procedure.

I've linked main report prompts to sub report BW Hana stored procedure prompts.  That works fine.

Now, I need to link main report formulas to sub report BW Hana stored procedure prompts.

My test formula is

global stringVar array x := ["121","113","115"];

join(x[1 to UBound (x)],",");

The formula resolves to

121,113,115

The CR report only return results where the criteria is 121.

I need the CR report to return results where the criteria is in (121 or 113 or 115).

Does anyone have a solutions?