diff --git a/attributealter/alterfunctions.php b/attributealter/alterfunctions.php
new file mode 100644
index 0000000000000000000000000000000000000000..cb0e960bd1052084b765cf40e5ae2b6acee471d9
--- /dev/null
+++ b/attributealter/alterfunctions.php
@@ -0,0 +1,19 @@
+<?php
+
+
+function attributealter_test(&$attributes, $spentityid = null, $idpentityid = null) {
+	$attributes['injected'] = array('newvalue');
+}
+
+function attributealter_realm(&$attributes, $spentityid = null, $idpentityid = null) {
+
+	if (array_key_exists('eduPersonPrincipalName', $attributes)) {
+		$eduppn = $attributes['eduPersonPrincipalName'][0];
+		$splitted = explode('@', $eduppn);
+		if (count($splitted) > 1) {
+			$attributes['realm'] = array($splitted[1]);
+		}
+	}
+
+}
+