Irule to match on Parameter value

i have Parameter named "User-Info" inside HTTP POST Request i want to check & if value of this parameter = XX , send to Pool-1 , if not send to Pool-2

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If it is a query parameter you can do it with something like this:

when HTTP_REQUEST {
    if {[string tolower [URI::query [HTTP::uri] "User_Info"]] equals "xx"}{
        pool "pool-1"
    }
    else {
        pool "pool-2"
    }
}

If it is a query parameter you can do it with something like this:

when HTTP_REQUEST {
    if {[string tolower [URI::query [HTTP::uri] "User_Info"]] equals "xx"}{
        pool "pool-1"
    }
    else {
        pool "pool-2"
    }
}

what if Parameter is not inside URI Query ?

what if Parameter is not inside URI Query ?