Create MBO from complex Webservice in SUP

Hi,

I am able to create an MBO from a simple Webservice and able to create the
Workflow and it works fine.

But when i am trying to create an MBO from the Webservice that returns me
structure i am unable to create the MBO from the complex Webservice.

I get the error:

We tried increasing the heap size of Eclipse to 1 GB still fails.

SUP Server & Workspace : 2.1.3

Sybase Info on complex Webservice:

http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc01283.0212/doc/html/fre1271362345278.html

I have also checked if i can use the JSON for the above but it is not
supported as mentioned in the below link:

http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc01695.0212/doc/html/lly1333753899857.html

Can you please let me know the fix/work around for the above.

ThanksInAdvance,