Index: sources/gui/qml/globals/Variables.qml
===================================================================
diff -u -r2ad0fc5c1215088ee0e4ea7f9b2bc367c4ed2fd9 -r9f70ae0e4a2a053486198c4a505575044a7ab3be
--- sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 2ad0fc5c1215088ee0e4ea7f9b2bc367c4ed2fd9)
+++ sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 9f70ae0e4a2a053486198c4a505575044a7ab3be)
@@ -237,7 +237,7 @@
 
     // it is prefered to use the regExp instead of the RegExpValidator
     // otherwise an extra RegExpValidator object will always created here.
-    readonly property var regExp_PatientID: /[A-Za-z0-9]{1,20}/
+    readonly property var regExp_PatientID: /[A-Za-z0-9_\-\.]{1,64}/
 
 
     readonly property string preTreatmentStepLabelCreate            : qsTr("CREATE"   )