using sqlplus yields an error: ORA-00923: FROM keyword not found where expected

Good evening, I nred your help please, Im Just started to learn sqlcode, and for my learnings sake Im trying to get the values for each column, so these variables can be passed to unix,

Im using sqlplus client and dont know if this is the problem, bcz in the select command when i select less than 3 fields works OK, but adding more columns yields an error:

ORA-00923: FROM keyword not found where expected

This is the query:

SET FEEDBACK OFF verify off lines 50 pages 0

 var cycle varchar2(99)

exec :cycle := '${billcycle}';

select COD_CLIENTE||','||NUM_ABONADO||','||COD_CICLFACT||','||COD_CARG||','||SUBSTR(COD_CICLFACT,1,1) CICLO||','||SUBSTR(COD_CLIENTE,8,8) LD

from tablex

where COD_CICLFACT = :cycle and dur_real > 700000000;

Even though I break up my query to multiple lines it yields the same error

This is a Record example:

COD_CLIENTE NUM_ABONADO COD_CICLFACT  

  43607574  99353513    90122    9945

The output shold be:

43607574,99353513,90122,9945,9

I appreciate your help in advanced