I am having trouble understanding how the flow works with netget and the app I am creating.  It is for ACH telephone payments. 
I have gotten the program to validate a users account with their phone number and then transfer to the next survo that asks if they want to 1. hear their account balance or 2. make a payement. 

When the code below executes the survo reads back all fo the xml including the balance.  As in
"Thirty five thousand two hundred one, Your current balance is 105, 45".
The first part is the suvo id, then the balance on the account and then the userid.

I have this set for retrieve text and read back.  should this be set for transmit and get next action? 
If so, how does the user get the balance amount? 
Can $balance be used in a question that is in the survo id passed in the action tag?  If so how is it formated?  Delimiter?


case 'option' :
        $userid = $_REQUEST['userid'];
        $option = $_REQUEST['select_option'];
       
        if ($option == 1){
        $balance = $phone_function->get_balance($userid);

                echo "<action>
                    <app>survo</app>
                    <parameters>
                    <id>35201</id>
                    <user_parameters>
                    <balance>Your current account balance is $balance</balance>
                    </user_parameters>
                    <p_t>$userid</p_t>
                    </parameters>
            </action>";
           
        }elseif ($option == 2){
        //send to make payment survo, pass userid
            echo "<action>
                    <app>survo</app>
                    <parameters>
                    <id>33581</id>
                    <p_t>$userid</p_t>
                    </parameters>
                </action>";
        }
        break;