Problems with lsx when migrate 5.0.2c to 6.0.3

I am migrating the client and server notes: In the client I have 5.0.2c version and the server is the 5.0.9 version.

The new version is the 6.0.3. If I use the client 5.0.2c with the new server version(6.0.3) I have not problems.

But if I use the 6.0.3 version with the client, I have problems with null parameters when I call to stored procedure in oracle using lsx functions.

When I put a text parameter with blank value ("") when the paremeter is captured in the stored procedure, This parameter contains and additional space and appear as ' ' and not ''. This causes multiple problems when I insert in the oracle tables.

Any ideas?

Thanks in advanced