Index: sources/gui/qml/globals/Variables.qml
===================================================================
diff -u -r6e9dccd1109d9c8d4ee4b6a21260618969a1706b -r3d56c7d73eb5562c85c1c5f6383718a4f1ffdd27
--- sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 6e9dccd1109d9c8d4ee4b6a21260618969a1706b)
+++ sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 3d56c7d73eb5562c85c1c5f6383718a4f1ffdd27)
@@ -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_\-\.]{1,20}/
 
 
     readonly property string preTreatmentStepLabelCreate            : qsTr("CREATE"   )