correlation help needed

Hi, I am working on a vugen script. There is a string I need to correlate: id="WD0203" ct="B" lsdata="{0:'Approve

I need to get the WD0203 as the parameter ApproveID. Here is the what I tried:

    web_reg_save_param_regexp(
        "ParamName=ApproveID",
        "RegExp=id=\"(.*?)\"\\ ct=\"B\"\\ lsdata=\"\{0\:\'Approve",
        SEARCH_FILTERS,
        "Scope=Body",
        "IgnoreRedirections=No",
        "RequestUrl=*/sap/bc/webdynpro/sap/IBO_WDA_INBOX;sap-ext-sid*",
        LAST);    

What did I do wrong? The loadrunner is returning some junk instead of the id although there is no error. Please help.

Thanks,

Jonathan.