http://help.sap.com/hana/SAP_HANA_SQL_Script_Reference_en.pdf
Have a look at "6.5 Column View Parameter Binding"
I don't believe it's supported with CE functions.
You may also want to consider if you can handle your requirement with graphical Calculation View. You should be able to map your Analytic View's input parameters with one exposed in the CalcView, in the graphical view's semantic node.