MsgId: MERR-35049

[kkv]

From the page source

<input type="hidden" name="RUNTIME.DUMMY.MENSYS.1" value="2016060108515928A25B8C0961CD0323E5F2B97A45CB367B0616536A904BC42EEC98DB60BB2D59F84FA36F1D2E5F7F2A73AE1E11FCE5DF3F6C44BF869A2CE1EEDC8934261193B961237A697A23634598BDECD551351B3F37NONE" />

Regular exp

web_reg_save_param_regexp(
        "ParamName=RUNTIME",
        "RegExp=name=\"RUNTIME\\.DUMMY\\.MENSYS\\.1\"\\ value=\"(.*?)\"\\ ",
        "Ordinal=all",
        SEARCH_FILTERS,
        "Scope=Body",
        "IgnoreRedirections=No",
        "RequestUrl=*/SIW_LGN*",
        LAST);

Applied to the below web_submit_data

web_submit_data("SIW_LGN", 
        "Action=url", 
        "Method=POST",
        //"EncodeAtSign=YES"        
        "RecContentType=text/html", 
        "Referer=url", 
        "Snapshot=t4.inf", 
        "Mode=HTML", 
        ITEMDATA, 
        "Name=%.WEB_HEAD.MENSYS.1", "Value=", ENDITEM, 
        "Name=SCREEN_WIDTH.DUMMY.MENSYS.1", "Value=1920", ENDITEM, 
        "Name=SCREEN_HEIGHT.DUMMY.MENSYS.1", "Value=1080", ENDITEM, 
        "Name=%.DUMMY.MENSYS.1", "Value=", ENDITEM, 
        "Name=RUNTIME.DUMMY.MENSYS.1", "Value={RUNTIME}", ENDITEM, 
        "Name=PARS.DUMMY.MENSYS.1", "Value=", ENDITEM, 
        "Name=MUA_CODE.DUMMY.MENSYS.1", "Value=*****", ENDITEM, 
        "Name=PASSWORD.DUMMY.MENSYS.1", "Value=*******", ENDITEM, 
        "Name=BP101.DUMMY_B.MENSYS.1", "Value=Login >>", ENDITEM, 
        "Name=%.WEB_FOOT.MENSYS.1", "Value=", ENDITEM, 
        LAST);

Error message 

Error -35049: No match found for the requested parameter "RUNTIME". Check whether the requested regular expression exists in the response data   [MsgId: MERR-35049]