Changing service client options between messages

I want to use a single service client to send multiple messages, with different options (i.e. SOAP action). Basicly I do the following.
1. Create service client object.
2. Create options object and set options.
3. Set options to service client (axis2_svc_client_set_options).
4. Execute message (axis2_svc_client_send_receive).
5. Create new options object and set new options.
6. Set new options to service client (axis2_svc_client_set_options).
7. Execute new message (axis2_svc_client_send_receive).

When doing step 7, I get the following message when running under Valgrind.

==3630== Invalid read of size 4
==3630== at 0x40954A2: axis2_options_get_xml_parser_reset (options.c:883)
==3630== by 0x4095E02: axis2_op_client_free (op_client.c:655)
==3630== by 0x4097D2E: axis2_svc_client_create_op_client (svc_client.c:1072)
==3630== by 0x4099735: axis2_svc_client_send_receive_with_op_qname (svc_client.c:835)
==3630== by 0x4099A1C: axis2_svc_client_send_receive (svc_client.c:939)
==3630== by 0x80496BA: main (client.cpp:273)
==3630== Address 0x427CD4C is 60 bytes inside a block of size 64 free'd
==3630== at 0x4004EFA: free (vg_replace_malloc.c:235)
==3630== by 0x4010E82: axutil_allocator_free_impl (allocator.c:92)
==3630== by 0x40951D8: axis2_options_free (options.c:787)
==3630== by 0x409785D: axis2_svc_client_set_options (svc_client.c:376)
==3630== by 0x804961F: main (client.cpp:261)

My guess is that the op_client tries to access the old options object from step 2/3. This is no longer valid as it has been freed when setting the new options (step 6).

Or is svc_client not designed to send multiple messages with different options?