IMPORT of a column name

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IMPORT of a column name

Hi,
I am trying to IMPORT a list of columnnames and then use these column names in my SQL card.But BTEQ doesnt seem to IMPORT the columnnames as COLUMNNAMES.Its imorting it as char VALUES.Here is the SQL card:

IMPORT DATA DDNAME=INDCOL
REPEAT *
SET REPEATSTOP ON
USING
INDCOL_N (CHAR(40)),
INDCOL (CHAR(40))

SELECT
COUNT( TZLM1901_N.XYZ) (NAMED COUNT_XYZ)
FROM DATABASE.TABLENAME_N TBL_N,
DATABASE.TABLENAME_N TBL
WHERE TBL_N.XYZ=TBL.XYZ
HAVING ((SUM( CASE WHEN :INDCOL_N ='Y'
THEN 1 ELSE 0 END) (DEC(15,0)))
- (SUM( CASE WHEN :INDCOL ='Y'
THEN 1 ELSE 0 END) (DEC(15,0))))
/ (COUNT_XYZ(DEC(15,0))) < .50;

INDCOL_N has a list of column names like TBL_N.abc
INDCOL has a list of column names like TBL.abc

Can anyone help?