Binding LOB data to stored procedure parameters

I've got a SP that has TEXT type parameter. I want to bind data to this parameter using OpenClient's ct_bind call and send data using ct_send_data in chunks (the data size exceeds 16k, so I can't use CHAR instead which works just fine). For testing, I've used the following code snippet:

http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc20155.1570/html/OS_SDK_nf/CIHHICJE.htm

but it doesn't work correctly. I'm getting "Type '7' not supported' from server error message when ct_send is executed.

My question is:

what are minimum server and OpenClient versions to get it working?