XML problems: Execute and Input

[Nevox]

Hello,
First step: when the user press some function key, the server send:
<YealinkIPPhoneInputScreen type="number"><URL>https://192.168.0.2/yealink/sample.php?type=fwd2&name=111&keynum=4</URL><InputField><Prompt>Destination:</Prompt><Parameter>num</Parameter><Selection>Selection</Selection><Default/></InputField></YealinkIPPhoneInputScreen>

Then the user enter a number, press "Send", the server answer:

<YealinkIPPhoneExecute><ExecuteItem URI="Led: MEMO4_RED=on"/><ExecuteItem URI="https://192.168.0.2/yealink/sample.php?type=aff&mess=Transfert : &al=Poste : 111"/></YealinkIPPhoneExecute>

The phone call then the given url. The server answers:

<YealinkIPPhoneStatus SessionId="Session" Timeout="0"><Message Size="double" Align="center" Color="black">Poste : 111</Message><Message Size="double" Align="center" Color="red">Transfert : </Message></YealinkIPPhoneStatus>

At the end, all the commands have been taken into account (led4 is red, the messages are shown in the screen). BUT the phone still show "Loading". Pressing "Cancel" send back to the input form.
BR,
Alban