How to call a Hana Variable in crystal

1.Have created a Hana variable in a calculated view and added to a project node. Called it as VAR_COUNTRY

2.How to call this variable in a client tools like Crystal

3.Below is what I tried but it does not work

SELECT *

FROM "_SYS_BIC"."mypkg/CV_SALES_DATA"

where

''{Country}'' in ''VAR_COUNTRY''

4.Country is the field for which I need to filter the data

5.VAR_COUNTRY is the variable in Hana

6.Do I have to create a parameter in the client tool and pass it to the variable

Any help is appreciated.

Thanks

Aswin