Sybase database

I have a .SP that receives several parameters these come as follows

@i_parametro1 = '0123','0125','0255','0245','2547'
@i_parametro2 = '0123','0125','0255','0245','2547'
@i_parametro3 = '0123','0125','0255','0245','2547'
@i_parametro4 = '0123','0125','0255','0245','2547'

..... and so on up to @ i_parameter20 this depends on what was sent, but at most it will always be 20 and at least 1.

Then I have to fill in a temporary table with the following query:

insert ca_operaciones_excel_tmp
       select

   op_operacion,   op_moneda,  op_fecha_ini,
   op_lin_credito, op_estado,  op_migrada,
   op_toperacion , op_oficina, op_oficial,
   op_cliente    , op_tramite, op_banco,
   op_fecha_reajuste,op_tipo,  op_reajuste_especial,
   op_reajustable, op_monto,   op_monto_aprobado,
   op_anterior,@s_user
   from ca_operacion
   where op_banco in (@i_parametro1)
   and op_estado not in (0,11,99,3)

the problem is that I need the query to be dynamic, that is, replace the value that is in the where with the other parameters @ i_parameter1 @ i_parameter2 @ i_parametro3 @ i_parametro4 ....

@w_siguiente varchar (20)
@w_contador int

Try to go through it with the following while:

while @w_contador < = 19    
begin   
 select @w_siguiente = '@operacion'+ CONVERT (varchar,@w_contador)

end

and in the query step:

where op_banco in ('+ @w_siguiente +')

However when I try to execute, it takes me is the literal text, not the value of the variable.

this is the complete code

while @w_contador < = 19    
begin   
 select @w_siguiente = '@operacion'+ CONVERT (varchar,@w_contador)



insert ca_operaciones_excel_tmp
       select

   op_operacion,   op_moneda,  op_fecha_ini,
   op_lin_credito, op_estado,  op_migrada,
   op_toperacion , op_oficina, op_oficial,
   op_cliente    , op_tramite, op_banco,
   op_fecha_reajuste,op_tipo,  op_reajuste_especial,
   op_reajustable, op_monto,   op_monto_aprobado,
   op_anterior,@s_user
   from ca_operacion
   where op_banco in (@w_siguiente)
   and op_estado not in (0,11,99,3)



if @@rowcount = 0
             begin
                 select @w_error = 1
                 goto ERROR
             end
end

How can I fix it.