Having read the following blog: http://scn.sap.com/community/hana-in-memory/blog/2013/12/30/using-multiple-values-in-input-parameter-for-filtering-in-graphical-calculation-view it's not clear to me the suggested solution works in all cases.
I'm currently working on SPS13 and I'm able to reproduce the exact behavior "Mic xyz" suggests in the comments of the same blog, "Creating a multiple parameter with multiple entries is working fine EXCEPT when the parameter is left blank." The error message when leaving the value blank is as follows:
I've tried the in() and match() logic suggested in the blog but neither the multiple parameter or blank will execute. In both scenarios the match() logic throws a type mismatch error.
Any advice on how this should work? As "Mic xyz" suggested the expectation is by leaving the parameter blank should resolve to a "select all" as done in ECC.