How to read BEX Query Name in Customer Exit

Hi All,

I have requirement to read SAP BEx query name in Customer Exit one of the I_Steps like  below.

I have  one customer exit variable and four BEx queries. And I have different logic for different queries for the customer exit variable.

Ex:

If Query="ABC".

     variable = 12/40.

elseif Query ="PQR".

      variable = 17*40.

elseif Query="XYZ".

     variable = 673.

endif.

How can i achieve the above requirement in customer exit?

Thanks in advance

Murali.