Mutipart Binary Content Response not properly extracted

Hi Team,

I am facing the issue for correlation, tried many ways to extract full body response for multipart binary content. Substituted flow is not working since extracted value going partially.

My script flow is, we do Checkout (Get object) this will download some binary content, same content needs to check-in back (Save Object). Here my baseline script is working fine. Attached baseline for your quick reference. If able to capture full response than I can trim some prefix.  

I have captured the full response through below code. Most of the layout file size will be more than 10MB to 70MB.  Let us know anything need to teak the setting or change the scripts. Thanks of bunch J

web_set_max_html_param_len("999990032");
                                
    //File extraction
    /*web_reg_save_param("BinaryData", 
                       "LB/BIN=<SOAP-ENV:Body><ns1:GetObjectsResponse>",
                       "RB/BIN=",
                       "SEARCH=body",
                       LAST);*/
    
    web_reg_save_param("CheckoutResponse", "LB=", "RB=", "Search=Body", "RelFrameID=1", LAST);