Feedback of multiple textline

Hello,
I would like participants to enter different chars/digits in textlines. in the next window, a string should be shown. Whatever I enter, the reported code is always "000000". Can you help me? Thank you very much:


l: LPartCode
t: textline
q: Please enter your participant code: <br>
<br>
If any information is unknown, please enter an X.
- <pre style="display:inline">1. SECOND letter of your first name (e.g., A, for M<strong>a</strong>x): </pre>
- <pre style="display:inline">2. THIRD letter of your last name (e.g., S, for Mu<strong>s</strong>termann): </pre>
- <pre style="display:inline">3. FIRST letter of your birthplace (e.g., F, for <strong>F</strong>rankfurt): </pre>
- <pre style="display:inline">4. SECOND digit of your birth date (e.g., 3, for 2<strong>3</strong>.07.1990): </pre>
- <pre style="display:inline">5. SECOND digit of your birth month (e.g., 7, for 23.0<strong>7</strong>.1990): </pre>
- <pre style="display:inline">6. SECOND letter of your mother's first name (e.g., L, for E<strong>l</strong>len):</pre>

l: reportCode
t: info
q: Your participant code is <strong>{$LPartCode_1}{$LPartCode_2}{$LPartCode_3}{$LPartCode_4}{$LPartCode5}{$LPartCode_6}</strong>. <br>