Cannot set TTL in COPY command

[techpyaasa .]

Hi all,

I'm getting following exception when I try to set TTL using COPY command,
where as it is working fine without TTL option. Followed doc at
https://docs.datastax.com/en/cql/3.1/cql/cql_reference/copy_r.html

*"**Improper COPY command.**"*

Command used as below

*COPY keyspace1.columnFamily1 FROM 'dump_data.csv' WITH TTL = '7200';*


Version is as below

*[cqlsh 4.1.1 | Cassandra 2.0.17 | CQL spec 3.1.1 | Thrift protocol
19.39.0]*


Can some one please tell me how to set TTL using COPY command?

Thanks
Techpyaasa