diff --git a/core/attributedef/AttributePropertySet.php b/core/attributedef/AttributePropertySet.php
new file mode 100644
index 000000000..cedad14e3
--- /dev/null
+++ b/core/attributedef/AttributePropertySet.php
@@ -0,0 +1,108 @@
+<?php
+
+class AttributePropertySet extends AttributeTable
+{
+    /**
+     * Useless constructor, but if not present PHP 7.4.0/7.4.1 is crashing :( (N°2329)
+     *
+     * @see https://www.php.net/manual/fr/language.oop5.decon.php states that child constructor can be ommited
+     * @see https://bugs.php.net/bug.php?id=79010 bug solved in PHP 7.4.9
+     *
+     * @param string $sCode
+     * @param array $aParams
+     *
+     * @throws \Exception
+     * @noinspection SenselessProxyMethodInspection
+     */
+    public function __construct($sCode, $aParams)
+    {
+        parent::__construct($sCode, $aParams);
+    }
+
+    public function GetEditClass()
+    {
+        return "PropertySet";
+    }
+
+    // Facilitate things: allow the user to Set the value from a string
+    public function MakeRealValue($proposedValue, $oHostObj)
+    {
+        if (!is_array($proposedValue)) {
+            return array('?' => (string)$proposedValue);
+        }
+
+        return $proposedValue;
+    }
+
+    public function GetAsHTML($value, $oHostObject = null, $bLocalize = true)
+    {
+        if (!is_array($value)) {
+            throw new CoreException('Expecting an array', array('found' => get_class($value)));
+        }
+        if (count($value) == 0) {
+            return "";
+        }
+
+        $sRes = "<TABLE class=\"listResults\">";
+        $sRes .= "<TBODY>";
+        foreach ($value as $sProperty => $sValue) {
+            if ($sProperty == 'auth_pwd') {
+                $sValue = '*****';
+            }
+            $sRes .= "<TR>";
+            $sCell = str_replace("\n", "<br>\n", Str::pure2html(@(string)$sValue));
+            $sRes .= "<TD class=\"label\">$sProperty</TD><TD>$sCell</TD>";
+            $sRes .= "</TR>";
+        }
+        $sRes .= "</TBODY>";
+        $sRes .= "</TABLE>";
+
+        return $sRes;
+    }
+
+    public function GetAsCSV(
+        $value, $sSeparator = ',', $sTextQualifier = '"', $oHostObject = null, $bLocalize = true,
+        $bConvertToPlainText = false
+    )
+    {
+        if (!is_array($value) || count($value) == 0) {
+            return "";
+        }
+
+        $aRes = array();
+        foreach ($value as $sProperty => $sValue) {
+            if ($sProperty == 'auth_pwd') {
+                $sValue = '*****';
+            }
+            $sFrom = array(',', '=');
+            $sTo = array('\,', '\=');
+            $aRes[] = $sProperty . '=' . str_replace($sFrom, $sTo, (string)$sValue);
+        }
+        $sRaw = implode(',', $aRes);
+
+        $sFrom = array("\r\n", $sTextQualifier);
+        $sTo = array("\n", $sTextQualifier . $sTextQualifier);
+        $sEscaped = str_replace($sFrom, $sTo, $sRaw);
+
+        return $sTextQualifier . $sEscaped . $sTextQualifier;
+    }
+
+    public function GetAsXML($value, $oHostObject = null, $bLocalize = true)
+    {
+        if (!is_array($value) || count($value) == 0) {
+            return "";
+        }
+
+        $sRes = "";
+        foreach ($value as $sProperty => $sValue) {
+            if ($sProperty == 'auth_pwd') {
+                $sValue = '*****';
+            }
+            $sRes .= "<property id=\"$sProperty\">";
+            $sRes .= Str::pure2xml((string)$sValue);
+            $sRes .= "</property>";
+        }
+
+        return $sRes;
+    }
+}
\ No newline at end of file