How can F5 forward IP fragment to same pool?

Thanks you for your response.I have a complex case as below:

 

totally 1000 bytes to transfer with TCP, every 100 bytes means a data unit and contains a key word( "ABC" or "DEF"). For example,the first 100 bytes containing "ABC" is sent to pool A, the 2th 100 bytes containing "DEF" is sent to pool B,...

 

With TCP::collect 100, I can find the string "ABC", but actually 100+ bytes have been received, then if TCP::release called, the part data of the 2th unit is also sent to pool A. My question is: when TCP:release called, can I define data length to transfer and keep left data until next TCP::release ?

 

 

Thanks.